MuscleForce Alpha Force Review
Alpha Force is a MuscleForce supplement sold in a bottle of 180 capsules, which the page lists as 30 servings. The product is presented as a testosterone-support formula with an 8-capsule serving of ingredients that the brand describes as premium testosterone-boosting ingredients. According to the description, the blend has been selected to help enhance natural testosterone levels, increase free-roaming testosterone, and help balance estrogen levels. The listed benefits are support for natural testosterone levels, the ability to increase free-roaming testosterone, and help with balancing estrogen. The how-to-use section instructs users to take three capsules twice daily or eight capsules once daily. The page states that the product can be stacked with any other MuscleForce product. For best results, the page recommends using it for eight to twelve weeks followed by a four-week break, and it notes that Alpha Force can be started in the last week of a cycle for PCT use. The warnings section states that the product is for use by healthy adults only and is not recommended for anyone under 18. It advises people who are pregnant or nursing not to use it, and it tells users with any preexisting medical condition to seek advice from a healthcare professional before taking it. It also instructs users to stop use and consult a healthcare professional if any adverse reaction occurs, and not to use the product if the safety seal is broken. The page is a Supplement City USA product page. At the time of capture, the price shown is $64.99 with a compare-at price of $69.99, which the page labels as a 7 percent saving. The product is currently marked as sold out, with a backorder notice. The page also offers free shipping on orders of $75 or more and a 30-day return policy. The ingredient list and barcode are not shown in the scraped text, so they are left blank here.
Tier ⓘ
Tier 4
Tier 4 · Emerging. A promising mechanism or animal data, with thin human evidence so far. Tiers run from 1, the strongest evidence, to 5. How we grade →
Evidence ⓘ
42 /100
How strongly the evidence says this product works: human studies count most, then real reviews, then our biohacker panel.
Positive Reviews
63% of 4
Biohacker Mentions
10 of 10
Study, Trial or Testing Result Summary
Members Only75 human studies · 28 improved
2 of these 75 human studies gave the ingredient by drip or injection, not by mouth.
75 human studies28 improved31 no effect6,258 people studied
The best-supported ingredient here is Tongkat Ali, given at a full dose. A pooled review of five trials found it raised total testosterone in healthy men and men with low testosterone [1]. In 105 older men with low testosterone, 200 mg daily for 12 weeks raised testosterone and eased fatigue [2]. In 32 young men, 600 mg daily for 2 weeks raised testosterone [3]. The spilanthes extract also looks promising. In 546 healthy men, testosterone rose more than with a dummy pill over 12 weeks [4]. An uncontrolled study of 326 men also saw a rise [5]. Zinc reaches a full dose at two servings, but most trials found no testosterone change [6][7]. Most good trials found vitamin D does not raise testosterone [8][9]. Boron results are mixed [10][11]. Stinging nettle helped urinary symptoms in men with an enlarged prostate but did not change testosterone [12]. Fadogia has been tested only in rats [13]. Piperine has no human hormone trial [14]. Androstadienedione has no studies at all. Animal and cell studies are never counted.
See all 75 studies →Hide the studies
- In a pooled review of 15 trials of men and women with chronic kidney disease, oral zinc raised testosterone in one small study of 20 patients, but zinc added to dialysis fluid did not, and luteinizing and follicle-stimulating hormones did not change.Interventions for treating sexual dysfunction in patients with chronic kidney disease.
- In a pooled analysis of trials in sub-fertile men, folate plus zinc did not change blood testosterone compared with placebo, though it did improve sperm concentration and shape.The Effect of Folate and Folate Plus Zinc Supplementation on Endocrine Parameters and Sperm Characteristics in Sub-Ferti…
- Pooling five randomized trials in healthy and low-testosterone men, Eurycoma longifolia supplements significantly raised total testosterone compared with control.Eurycoma longifolia (Jack) Improves Serum Total Testosterone in Men: A Systematic Review and Meta-Analysis of Clinical T…
- In a review of 14 trials in people with chronic kidney disease, oral zinc improved testosterone but zinc added to dialysis fluid did not, and luteinizing and follicle-stimulating hormones were unchanged.Treatment options for sexual dysfunction in patients with chronic kidney disease: a systematic review of randomized cont…
- A review of vitamin D and fertility reported that in men vitamin D is linked with semen quality and androgen status and that treatment might increase testosterone, though the evidence was limited.Vitamin D and fertility: a systematic review.
- A review of seven reviews of drug and supplement treatments in people aged 65 and older found vitamin D improved muscle strength and physical performance, especially in women with low vitamin D levels, but it did not test hormone levels in men; testosterone, not vitamin D, was the treatment found helpful for older men.Pharmacological Interventions to Improve Muscle Mass, Muscle Strength and Physical Performance in Older People: An Umbre…
- A review of mostly observational studies in middle-aged and older men found low vitamin D linked to depression and to lower testosterone, but it did not show that supplements raise testosterone.Vitamin D, testosterone and depression in middle-aged and elderly men: a systematic review.
- A review of 52 studies of supposed testosterone boosters, including 10 on vitamin D3, found that most, including vitamin D, did not raise total testosterone compared with placebo.Do "testosterone boosters" really increase serum total testosterone? A systematic review.
- A review of 105 trials on ingredients in male testosterone and erectile supplements, including zinc, found limited evidence overall, with many ingredients having contradicting or lacking evidence.A systematic review and evidence-based analysis of ingredients in popular male testosterone and erectile dysfunction sup…
- Of 11 human studies reviewed, 7 showed clear benefit of Eurycoma longifolia for male sexual health problems including low testosterone and 4 did not show enough effect.Eurycoma Longifolia as a potential adoptogen of male sexual health: a systematic review on clinical studies.
- In 620 men with an enlarged prostate, 6 months of nettle (Urtica dioica) improved urinary symptoms in 81% versus 16% on placebo, with better urine flow and a smaller prostate, while testosterone and prostate-specific antigen stayed unchanged.Urtica dioica for treatment of benign prostatic hyperplasia: a prospective, randomized, double-blind, placebo-controlled…
- In 546 healthy men given spilanthol or placebo for three months, total and free testosterone rose significantly more with spilanthol, with no significant rise in estradiol, along with greater muscle size and strength and no significant adverse effects.The effects of spilanthol (SA3X) supplementation on muscle size and strength in healthy men - a randomized parallel-grou…
- In 282 men given high-dose vitamin D or placebo for 6 to 12 months, vitamin D did not change total or free testosterone, even in men with low vitamin D.Supplementation with vitamin D does not increase serum testosterone levels in healthy males.
- In 228 vitamin D deficient young men, six months of vitamin D with or without calcium did not change muscle strength or testosterone compared with placebo.Vitamin D and calcium supplementation, skeletal muscle strength and serum testosterone in young healthy adult males: Ran…
- In three small trials of 184 men in total, daily vitamin D of 600 to 2000 IU for 6 to 16 weeks raised vitamin D blood levels but did not raise testosterone.Vitamin D supplementation and testosterone concentrations in male human subjects.
- In 148 men aged 70 and over with low testosterone, the combination of testosterone injections, strength training and vitamin D, calcium and protein improved chair stand performance over 20 weeks, but the effect of vitamin D alone could not be separated.Beneficial effects of exercise, testosterone, vitamin D, calcium and protein in older men-A randomized clinical trial.
- In 103 healthy people and 33 dialysis patients given vitamin D or placebo for 12 weeks, vitamin D raised blood vitamin D levels but did not change testosterone.Serum Testosterone Levels Are Not Modified by Vitamin D Supplementation in Dialysis Patients and Healthy Subjects.
- In 133 men with advanced heart failure and low vitamin D, 4000 IU daily for 3 years did not prevent the decline in testosterone compared with placebo.Vitamin D supplementation does not prevent the testosterone decline in males with advanced heart failure: the EVITA tria…
- In 105 men aged 50-70 with low testosterone, 12 weeks of Physta at 200 mg daily (and 100 mg at week 12) raised total testosterone more than placebo and reduced fatigue and ageing male symptom scores.Effect of Eurycoma longifolia standardised aqueous root extract-Physta® on testosterone levels and quality of life in ag…
- In 100 healthy men with normal testosterone, 20,000 IU of vitamin D3 per week for 12 weeks did not change testosterone, and it slightly worsened a measure of insulin sensitivity.Vitamin D and Testosterone in Healthy Men: A Randomized Controlled Trial.
- In 100 middle-aged men with low testosterone, 20,000 IU of vitamin D3 per week for 12 weeks did not change testosterone or other hormone levels compared with placebo.Effects of vitamin D supplementation on androgens in men with low testosterone levels: a randomized controlled trial.
- In 47 fertile and 40 subfertile men given zinc sulphate with folic acid daily for 26 weeks, sperm concentration rose in subfertile men but testosterone and other hormones did not change compared with placebo.Does folic acid and zinc sulphate intervention affect endocrine parameters and sperm characteristics in men?
- In 63 moderately stressed men and women, 4 weeks of Tongkat Ali extract raised salivary testosterone by 37% and lowered cortisol by 16% compared with placebo.Effect of Tongkat Ali on stress hormones and psychological mood state in moderately stressed subjects.
- In 62 infertile men, taking vitamin D3 by mouth did not change total testosterone, luteinizing hormone, follicle stimulating hormone, or semen parameters compared with placebo, though sex hormone binding globulin fell in the vitamin D group.Evaluation of the effect of vitamin D3 supplementation on quantitative and qualitative parameters of spermograms and hor…
- In 60 women with polycystic ovary syndrome, taking vitamin D with fish oil for 12 weeks lowered blood testosterone compared with placebo, and also lowered inflammation and oxidative stress markers.The influences of vitamin D and omega-3 co-supplementation on clinical, metabolic and genetic parameters in women with p…
- In 60 women with polycystic ovary syndrome, 50,000 IU of vitamin D every 2 weeks plus a probiotic for 12 weeks lowered total testosterone, hirsutism, and inflammation and oxidative stress markers compared with placebo.Vitamin D and probiotic co-supplementation affects mental health, hormonal, inflammatory and oxidative stress parameters…
- In 60 overweight women with polycystic ovary syndrome and vitamin D deficiency, 50,000 IU of vitamin D3 per week for 12 weeks lowered total testosterone and hirsutism scores compared with placebo.Androgens and hirsutism score of overweight women with polycystic ovary syndrome improved after vitamin D treatment: A r…
- In 54 overweight men on a weight loss program, 3,332 IU of vitamin D daily for 1 year raised total testosterone from about 10.7 to 13.4 nmol/L, while placebo showed no change.Effect of vitamin D supplementation on testosterone levels in men.
- In 53 young male Estonian conscripts, 1200 IU of vitamin D3 daily over 7 months during winter kept more men out of critically low vitamin D levels but did not change testosterone or hand grip strength compared with placebo.Seven-month wintertime supplementation of 1200 IU vitamin D has no effect on hand grip strength in young, physically act…
- In infertile men taking zinc 10 mg combined with D-aspartic acid and ubiquinol daily for 3 months, total testosterone and progressive sperm motility rose significantly compared with before treatment.Evaluation of in vivo supplementation of 2660 mg D-aspartic acid and 200 mg ubiquinol and 10 mg zinc on different semen …
- In 46 active men, 2000 IU of vitamin D3 daily for 12 weeks significantly lowered serum total testosterone in the vitamin D group, while aerobic capacity and anaerobic power improved.Effects of vitamin D3 supplementation for 12 weeks on serum levels of anabolic hormones, anaerobic power, and aerobic pe…
- In 45 men with age-related androgen deficiency, 6 months of Eurycoma longifolia plus exercise improved knee strength and symptoms, though the benefit was mostly seen with exercise and testosterone levels were only correlated with strength.Exercise associated or not to the intake of Eurycoma longifolia improves strength and cardiorespiratory fitness in men w…
- In 45 men with age-related androgen deficiency, 6 months of 200 mg Eurycoma longifolia combined with concurrent training improved erectile function and increased total testosterone compared with the other groups.A 6-month, double-blind, placebo-controlled, randomized trial to evaluate the effect of Eurycoma longifolia (Tongkat Ali…
- In 40 young men taking 200 mg of Eurycoma longifolia daily for 8 weeks, with or without resistance training, the urinary testosterone to epitestosterone ratio did not change.Effects of Eurycoma Longifolia Jack Supplementation Combined with Resistance Training on Isokinetic Muscular Strength an…
- In 36 elite male rowers given 3,000 IU of vitamin D3 daily for 8 weeks, vitamin D blood levels rose and blood counts held steady, but testosterone and cortisol did not differ from the control group.Effects of Vitamin D Supplementation on Haematological Values and Muscle Recovery in Elite Male Traditional Rowers.
- In 32 healthy young men, 600 mg of Eurycoma longifolia daily for 2 weeks raised total testosterone, free testosterone and estradiol compared with placebo, while luteinising hormone, follicle-stimulating hormone and sex hormone-binding globulin did not change.The effect of Eurycoma Longifolia on the regulation of reproductive hormones in young males.
- In 30 older men recovering from COVID-19, 2000 IU of vitamin D daily for 6 weeks lowered creatine kinase, a muscle damage marker, versus placebo, but physical tests showed no significant gains.Effect of Vitamin D Supplementation on Muscle Status in Old Patients Recovering from COVID-19 Infection.
- In 20 men on hemodialysis, 50 mg of zinc daily for 6 months raised testosterone and sperm count and lowered luteinizing and follicle-stimulating hormones, with better libido and potency, unlike placebo.Effect of oral zinc therapy on gonadal function in hemodialysis patients. A double-blind study.
- In 19 male bodybuilders given 2.5 mg of boron daily or placebo for 7 weeks, boron did not change testosterone, lean body mass or strength; both groups improved from training alone.Plasma boron and the effects of boron supplementation in males.
- In 19 male bodybuilders given 2.5 mg of boron daily or placebo for 7 weeks, blood boron rose but testosterone, lean body mass and strength were not affected by boron; both groups improved from training.The effect of boron supplementation on lean body mass, plasma testosterone levels, and strength in male bodybuilders.
- In 18 male dialysis patients with sexual dysfunction and normal prolactin, oral zinc acetate for 6 months raised blood zinc but did not change testosterone, sex hormone binding globulin, gonadotrophins, sperm counts or erections compared with placebo; 1 of 9 on zinc reported better sexual function.Zinc deficiency and hyperprolactinaemia are not reversible causes of sexual dysfunction in uraemia.
- In 14 obese young men, 100 mg a day of zinc sulfate for one month raised zinc and leptin levels but did not change androgens or insulin sensitivity compared with placebo.[Effect of oral zinc administration on insulin sensitivity, leptin and androgens in obese males].
- In 14 men on kidney dialysis, 6 weeks of zinc chloride added to the dialysis fluid did not change testosterone, gonadotrophin levels or sexual function compared with placebo.Absence of a therapeutic effect of zinc in the sexual dysfunction of haemodialysed patients.
- In 13 male recreational athletes, 400 mg daily of Eurycoma longifolia extract for 6 weeks did not change the urinary testosterone to epitestosterone ratio or liver and kidney function compared with placebo.Supplementation of Eurycoma longifolia Jack Extract for 6 Weeks Does Not Affect Urinary Testosterone: Epitestosterone Ra…
- In 8 dialysis men with low zinc, zinc given during dialysis improved potency in all four treated men and brought low testosterone back to normal in the two who had low levels, while placebo did not help.Reversal of uraemic impotence by zinc.
- After varicocele surgery, 6 months of zinc sulphate plus folic acid raised inhibin B and seminal antioxidant activity in men, while zinc alone or folic acid alone did not.Effect of folic acid and zinc sulphate on endocrine parameters and seminal antioxidant level after varicocelectomy.
- In 66 men with low or subclinical hypogonadism and low vitamin D, three months of calcidiol raised vitamin D levels and lowered parathyroid hormone, while cholecalciferol did not; testosterone was not reported as an outcome.Late-onset hypogonadism: beyond testosterone.
- In 11 young men fed controlled diets, 35 days on very low zinc (1.4 mg a day) lowered testosterone (26.9 to 21.9 nmol/L) and semen volume compared with 10.4 mg a day, showing testosterone drops when zinc is depleted.Effects of dietary zinc depletion on seminal volume and zinc loss, serum testosterone concentrations, and sperm morpholo…
- In men with liver cirrhosis and impotence or low sex hormones, zinc sulfate taken for 6 to 8 months did not work better than placebo, and testosterone levels did not change.Effect of the administration of zinc sulfate on hypogonadism and impotence in patients with chronic stable hepatic cirrh…
- In adult men with sickle cell anemia, oral zinc supplementation raised serum testosterone compared with placebo and corrected their androgen deficiency.Effect of zinc supplementation on serum testosterone level in adult male sickle cell anemia subjects.
- In 100 men on hemodialysis, 250 mg of zinc sulfate daily for 6 weeks raised testosterone and luteinizing hormone levels, though the authors judged the effect on sexual dysfunction unclear; there was no placebo group.Impact of oral zinc therapy on the level of sex hormones in male patients on hemodialysis.
- In 99 women with polycystic ovary syndrome taking 4000 IU of vitamin D daily for 6 months, spironolactone and pioglitazone lowered leptin more than a med, though this open-label study had no placebo group.Read the study on PubMed (32053841) →
- In 76 men with late-onset hypogonadism taking 200 mg of a standardized tongkat ali extract daily for 1 month, serum testosterone and symptom scores improved significantly, with 90.8% reaching normal testosterone levels afterward versus 35.5% before; there was no placebo group.Standardised water-soluble extract of Eurycoma longifolia, Tongkat ali, as testosterone booster for managing men with la…
- In a retrospective uncontrolled case series of 15 men with low testosterone, a compounded sublingual product containing 10 mg boron along with enclomiphene, vitamin C, spermidine and a mineral delivery system was followed by higher total testosterone at 60 days, but the boron contribution cannot be separated from the other ingredients and there was no control group.Changes in Serum Testosterone After Sublingual Enclomiphene Citrate Combined With a Mineral Oxide Delivery System: A Ret…
- In 12 postmenopausal women on a metabolic unit, adding 3 mg of boron daily to a low-boron diet markedly raised serum testosterone and estradiol, with reduced urinary calcium loss.Effect of dietary boron on mineral, estrogen, and testosterone metabolism in postmenopausal women.
- In 10 sedentary young men taking zinc sulfate at 3 mg per kg of body weight daily for 4 weeks, testosterone levels were higher after supplementation, and zinc appeared to prevent the drop in testosterone seen after exercise; there was no placebo group.Effect of fatiguing bicycle exercise on thyroid hormone and testosterone levels in sedentary males supplemented with ora…
- In postmenopausal women, adding 3 mg of boron daily for 3 weeks to a low-boron diet did not change sex a med hormone levels, bone turnover markers or mineral excretion.Read the study on PubMed (8329361) →
- In a cross-sectional German population study of 773 adults without diabetes, piperine levels in the blood were linked to androgen-related metabolites, but the study did not test piperine as a supplement and did not show that it improves male hormone levels.Sex-specific metabolic profiles of androgens and its main binding protein SHBG in a middle aged population without diabe…
- In an uncontrolled follow-up of 326 sexually active men aged 25 to 60 taking SA3X capsules for three months, serum testosterone rose, though the authors note that causality cannot be confirmed without a controlled trial.Evaluation of Serum Testosterone Levels Following Three Months of SA3X (Spilanthes acmella) Supplementation.
- In 212 workers exposed to boron at work, including a highly exposed group averaging about 47 mg per day, testosterone, luteinizing hormone and follicle-stimulating hormone levels were not affected.Evaluation of FSH, LH, testosterone levels and semen parameters in male boron workers under extreme exposure conditions.
- In 37 men with low-trauma forearm fractures in Northern Ireland, 49% had low vitamin D and 27% had low testosterone; this was a one-time snapshot, not a treatment test.A study of male patients with forearm fracture in Northern Ireland.
- In 32 men with Kallmann syndrome on hormone replacement, 43% had low vitamin D, and longer hormone treatment was linked to better bone density.Bone involvement in males with Kallmann disease.
- In workers at a boric acid plant in Turkey with an average daily boron exposure of about 14 mg, sperm quality and reproductive hormone levels, including total testosterone, showed no adverse effects.Reproductive toxicity parameters and biological monitoring in occupationally and environmentally boron-exposed persons i…
- In a pilot study of 25 physically active seniors, 400 mg daily of Tongkat Ali for 5 weeks raised total and free testosterone and increased muscle strength, though there was no placebo group.Tongkat Ali as a potential herbal supplement for physically active male and female seniors--a pilot study.
- In 18 men with advanced androgen-independent prostate cancer, intravenous paricalcitol did not produce a sustained 50% drop in prostate-specific antigen, though it lowered elevated parathyroid hormone.Phase I/II study of 19-nor-1alpha-25-dihydroxyvitamin D2 (paricalcitol) in advanced, androgen-insensitive prostate cance…
- In 18 healthy men, taking 10 mg of boron daily for 4 weeks raised estradiol and showed a trend toward higher testosterone, with no change in cholesterol.The effect of boron supplementation on its urinary excretion and selected cardiovascular risk factors in healthy male su…
- In 14 regularly exercising men, a high-dose zinc-containing supplement raised blood zinc but did not change serum testosterone or testosterone metabolites in urine.Read the study on PubMed (17882141) →
- In 8 healthy men, taking 10 mg of boron daily for one week raised free testosterone and lowered inflammatory markers, though sex hormone binding globulin also fell and estradiol decreased.Read the study on PubMed (21129941) →
- In male rats, a 200 mg per kg dose of black pepper spice was tested alongside Yaji sauce; the abstract reports that the isolated spices changed testosterone and semen measures but does not state the direction for black pepper alone.A Comparative study on the effects of Yaji (Suya Meat sauce) and its spice constituents on the male reproductive profile…
- In mice given cyclophosphamide, which damaged the testes, piperine at 5 or 10 mg per kg reduced testicular tissue damage, oxidative stress and cell death over 8 days; the abstract does not report a testosterone change from piperine.Piperine mitigates oxidative stress, inflammation, and apoptosis in the testicular damage induced by cyclophosphamide in…
- In alloxan-diabetic male rats, black pepper fruit extract at 122.5 mg per kg for 8 days increased the number of Leydig cells, which make testosterone, and improved libido, while the higher 245 mg per kg dose improved sperm measures.Fruit Extract of Black Pepper (Piper Nigrum L.) Ameliorates Male Reproductive Dysfunction in Alloxan-Induced Diabetic Ra…
- In alloxan-diabetic male rats, black pepper fruit extract at 245 mg per kg for 8 days significantly improved intratesticular testosterone, sperm concentration and normal sperm shape, and the lower 122.5 mg per kg dose improved erection and libido measures.Effects of Black Pepper (Piper nigrum L.) Fruit Extract on Sexual Function, Hormonal Parameters, Sperm Parameters, Testi…
- In male rats, piperine at 10 mg per kg given with a med for 28 days lowered antioxidant enzymes, raised oxidative damage, and reduced genes needed for testosterone production, indicating reproductive toxicity.Read the study on PubMed (40246250) →
- In male rats given 10 mg per kg of piperine daily for 30 days, testes and accessory sex organs shrank, sperm counts fell, testicular testosterone dropped, and pituitary signaling hormones rose, although blood testosterone stayed normal.Effects of piperine on testis of albino rats.
- In rats fed a high-fat diet and given carbimazole, which lowered testosterone, piperine at 40 mg per kg for 10 weeks brought testosterone back to near normal levels along with thyroid hormones and lipids.Piperine, an active principle from Piper nigrum, modulates hormonal and apo lipoprotein profiles in hyperlipidemic rats.
Review Totals and Summary
Members Only4 reviews · 63% positive
4 reviews · Amazon 2 · Supplement City USA 2
63% positive0% neutral37% negative
MuscleForce Alpha Force capsules receive about 4 ratings across stores, with 50% of star ratings being 4 or 5. Overall customer feedback is mixed, with some users reporting significant benefits while others found the results negligible or disappointing. **What it did for buyers:** Some customers experienced notable positive effects from taking MuscleForce Alpha Force capsules. Users reported an increase in energy and stamina, with one reviewer stating it "GAVE ME MORE ENERGY AND STAMINA." Another significant benefit mentioned was weight loss, with one user reporting a loss of 35 lbs. Additionally, some buyers found the product helpful in the "man hood department." **Complaints:** Not all users had positive experiences. Some customers reported that the product "Didn't work for me" and they "Didn't see the desired results." For those specifically hoping to increase testosterone levels, feedback indicated that blood levels rose only "a negligible amount." Some reviewers felt it was "Too early to tell" if the product was effective, suggesting it might require more time or a higher concentration to show significant results. **Taste, Smell, Pill Size, or Form:** A specific complaint regarding the capsules was their taste. One reviewer noted that the product leaves "a horrible after taste, when swallowed." This summary focuses solely on the capsules and does not include feedback on other forms of the product, such as gummies or powder, which may also be available. **Value for Money:** While not explicitly stated in terms of monetary value, the sentiment around value can be inferred from the reported results. Customers who experienced significant benefits like increased energy, stamina, weight loss, and male enhancement likely found the product to be good value. Conversely, those who reported that it "Didn't work for me" or only saw "a negligible amount" of change in testosterone levels might perceive it as poor value for their investment. **Who it seems to suit and who it did not:** MuscleForce Alpha Force capsules appear to suit existing fans of the MuscleForce brand, who express loyalty and eagerness to try new products from the line. It also seems beneficial for individuals seeking general improvements in energy, stamina, and male enhancement, as well as those looking for support in weight loss. The product did not seem to suit individuals expecting a rapid or substantial increase in testosterone levels, with some reporting only a minimal effect. It also may not be suitable for those sensitive to aftertastes, given one specific complaint about a "horrible after taste."
Biohacker Summary
Members Only10 of 10 recommend it
10 of 10 biohackers on our panel recommend it
Tongkat Ali, the main ingredient, drew comments from seven of the ten panelists, and four of them recommend it: they say it lowers a protein that binds testosterone, freeing up more testosterone, and one adds that it helps libido and pre-workout energy. One gave a dose of about 400 milligrams a day, for people with high levels of that binding protein. Two were neutral, with one saying it mostly works in men who already have low testosterone, and one used to take it for libido but stopped because it was too stimulating. Nobody named a preferred form or a pairing for it. Vitamin D, a smaller ingredient in this product, is used or recommended by most of the panel, with daily doses of 5,000 units mentioned by one panelist and 10,000 by another.
See all 10 biohackers →Hide the biohackers
Andrew Huberman · Tongkat Ali · neutral
- Discusses Tongkat Ali and its effects on free testosterone.
- Zinc carnosine to support and improve the lining of your gut.
- Notes that AG1 Pro contains zinc carnosine to support and improve the lining of the gut.
- Discusses Fadogia Agrestis, including dosage and cycling.
- States that AG1 Pro contains zinc carnosine to support and improve the lining of the gut.
- Uses AG1 Pro, which contains zinc carnosine to support and improve the lining of the gut.
- States that AG1 Pro contains zinc carnosine to support and improve the lining of the gut, and he was already taking some of these ingredients separately.
- States that AG1 Pro includes zinc carnosine, which he was already taking separately, to support and improve the lining of the gut.
- Notes that most people are probably deficient in vitamin D and benefit from supplementing, but there's no point in doing it unless you're deficient for most things.
- Personally takes zinc carnosine, which is included in AG1 Pro to support and improve the lining of the gut.
- AG1 Pro has zinc carnosine to support and improve the lining of your gut. Some of these ingredients I personally was already taking separate from the AG1 formula.
- States that AG1 Pro contains zinc carnosine to support and improve the lining of your gut.
- Uses AG1 Pro, which contains zinc carnosine to support and improve the lining of the gut.
- Takes 5,000 IU of Vitamin D3 in the morning for longevity.
Thomas DeLauer · Tongkat Ali · recommends
- Recommends Tongkat Ali, stating that it stimulates testosterone production and availability by increasing luteinizing hormone, inhibiting estrogen production, decreasing sex hormone binding globulin, and lowering cortisol.
- Adds zinc to their immunity duo because it helps them absorb vitamin C, considering the two together a fantastic combination for fall and winter.
- Uses vitamin D3 in the fall and winter months when getting less sun, as it's important to supplement it then.
- Recommends taking a massive amount of vitamin D simultaneously with an early morning massive breakfast to help reset circadian rhythms and address hyperphagia.
- Recommends zinc, noting it is a cofactor for enzymes that build neurotransmitters, and deficiency can affect mood, happiness, and motivation.
- Recommends Vitamin D, stating that it has receptors throughout the brain and deficiency can quickly impact brain and mood.
- Takes supplemental vitamin D because he is skin sensitive and from northern latitudes, limiting his UV exposure.
- Recommends taking vitamin D on non-liver days to ensure both nutrients get proper receptor access.
- Mentions that more zinc could be beneficial for testosterone, but it's not working on the axis that most people need help with.
- Takes Purity's liquid vitamin D3 with K2 because she is constantly inside during the day; D3 is for overall wellness and K2 helps the body absorb calcium properly.
- Compares zinc content, noting salmon has under 1mg while oysters have 74mg per 100g, a 70x difference.
- Recommends getting vitamin D, suggesting it can be obtained while walking.
- Recommends keeping zinc levels topped off because it is a critical cofactor for over 300 enzymes and is important for immune cells, testosterone, and wound healing.
- States that vitamin D is best obtained from the sun, but getting it from food definitely helps, and notes its role as a hormone influencing many cells.
Ben Greenfield · Tongkat Ali · recommends
- Recommends Tongkat Ali at around 400 milligrams a day for those with high SHBG, noting it may lower sex hormone binding globulin to free up more testosterone, and is also good for overall libido and pre-workout energy.
- Ben Greenfield's formulation includes 30 grams of zinc a day, taken for one week before surgery and two weeks after, as it is an important cofactor for wound healing.
- Notes that Vitamin D is actually a hormone and recommends patients aim for levels around 40 to 50, or even 60 for fracture healing, for optimal healing, as opposed to just above 20 which is considered normal.
- Mentions vitamin D as part of a bare-minimum protocol.
- Advises getting vitamin D levels between 60 and 100 nanograms per milliliter as a minimum step for overall health and to slow down heart disease.
- Emphasizes that zinc sufficiency is crucial for immunity because the thymus-derived peptide thymulin, which trains lymphocytes, requires zinc to be active.
- Recommends adding zinc into one's stack because it is a co-factor for enzymes involved in testosterone synthesis and sperm maturation, and zinc deficiency is a reproducible cause of low sperm count.
- He mentions zinc as a supplement with real human data behind it for male fertility.
- Zinc may support both testosterone and sperm count.
- Has been taking Vitamin D3 K2 for over a decade.
- Warns that he was taking so much zinc without realizing it because it was in five different things he was taking, and he couldn't pinpoint the problem.
- Notes that sunlight influences more than just vitamin D production.
- Recommends keeping vitamin D levels high, suggesting that a supplement is probably not a bad idea, especially given that many people are deficient due to spending most of their time indoors.
- Recommends getting enough vitamin D for blood pressure management.
Siim Land · Tongkat Ali · neutral
- States that Tongkat Ali does increase testosterone, being one of the few testosterone boosters that might do so, but it mostly works in men with low testosterone.
- Advises against taking vitamin D in the morning with other supplements because it is fat soluble and requires dietary fat for better absorption.
- Recommends taking Vitamin D with fat for better absorption.
- States that Vitamin D connects biology to light and that UVB reaching the skin enables its production.
- Thinks vitamin D has some of the strongest evidence and is worth considering.
- Notes that Vitamin K2 pairs well with vitamin D by regulating calcium and bone mineralization.
- Recommends taking vitamin D supplements with some fat to maximize its absorption, suggesting with food or a teaspoon of olive oil.
- Notes that taking vitamin D3 with a fat-containing meal resulted in 32% higher peak blood vitamin D levels.
- Recommends taking Vitamin D in the morning or at lunch with fat.
- Notes that Boron improves vitamin D.
- Recommends Vitamin D because microglia contain Vitamin D receptors, and Vitamin D helps keep the immune system properly regulated, with low levels associated with greater neuroinflammation and a higher risk of autoimmune conditions.
- States that deficiencies in nutrients such as zinc can impair normal immune regulation.
- Explains that zinc raises testosterone only if zinc status or testosterone levels are low, and can reduce the duration and severity of colds and flu, and lower blood sugar and lipids if zinc status is low.
- Mentions that Tongkat ali does have some evidence for boosting testosterone, although mostly in men with low testosterone.
Dave Asprey · Tongkat Ali · stopped
- Used to take Tongkat Ali to help with libido before learning how to raise a woman's estrogen, but now he can't even take it because it would make him too horny.
- Takes Vitamin DAKE from Suppgrade Labs.
- Suggests that vitamin D supports brain health, muscle function, and focus.
- Host Dave Asprey explains why correcting a vitamin D deficiency still makes sense for male fertility, even though supplementation did not improve overall semen parameters in a randomized trial.
- States that currently, he is only taking vitamin C and vitamin D.
- Developed a nonnano zinc sunscreen over five years, stating her skin is probably better now than it's ever been.
- Recommends vitamin D, noting it's actually a hormone and that most people are deficient, even those who take it, because they don't take enough.
- States that most people on the spectrum are low in vitamin D and need more of it, mentioning his own product, Vitam DAKNE, which contains real vitamin A.
- Emphasizes the importance of having enough zinc before trying advanced longevity strategies like peptides.
- Suggests that zinc has better safety and protective data than meds for reducing cardio respiratory risk.
- Dave Asprey recommends Vitamin D3 with K2, explaining D3 is a hormone made from sunlight and K2 directs calcium into bones, not arteries, highlighting its low cost, widespread deficiency, and the ability to test its effectiveness.
- Recommends Vitamin D as one of the most important supplements for overall health.
- Takes Vitamin DAKE from Suppgrade Labs because D3, A, K2, and E work together.
- Mentions taking vitamin D in the morning, comparing it to the daily dosing of testosterone.
Dr. Rhonda Patrick · Tongkat Ali · recommends
- Recommends Tongkat Ali, stating it lowers SHBG, increasing free testosterone, and enhances steroidogenesis by improving cholesterol transport into mitochondria for testosterone synthesis.
- Vitamin D supplementation was linked to a 40% lower risk of dementia in an observational study of more than 12,000 older adults.
- Mentions that vitamin D also plays a role in maintaining muscle mass.
- Notes that not getting enough zinc can affect testosterone, as zinc is very important for testosterone synthesis.
- Recommends ensuring adequate vitamin D intake for men's sperm health.
- Recommends men take a 30 milligram zinc supplement for sperm health when preparing for IVF.
- Vitamin D and strength training alone did not, but adding them strengthened the effect on one clock, with the full combination slowing that measure by ~3.8 months.
- Lutein and zeaxanthin can also be obtained from certain multivitamins.
- Discusses findings from a meta-analysis on zinc supplementation, noting it improved insulin resistance, inflammation, and oxidative stress in people with diabetes or prediabetes, and explains its biological role in the pancreas.
- Recommends Vitamin D, noting it regulates over 5% of the genome, including genes involved in immune defense, neurotransmitter synthesis, and longevity, and correcting deficiency may slow epigenetic aging.
- Uses Vitamin D3 as an example of a supplement that an AI model could track to see its impact on other metrics like glucose levels.
- Recommends Vitamin D, explaining that it regulates over 5% of the genome, including genes involved in immune defense, neurotransmitter synthesis, and longevity.
- Combining omega-3s with vitamin D and exercise has an additive effect, translating to ~3 months of slowed biological aging.
- The effect got stronger when omega-3 was combined with vitamin D and resistance training, with the full stack delaying phenotypic aging by about 3.8 months.
Dr. Mark Hyman · Tongkat Ali · recommends
- Recommends Tongkat Ali, an ancient remedy, as a study found it reduced tension, stress, anger, confusion, and cortisol, while increasing testosterone by about 37%, which could help improve stress hormone profile and sex drive.
- Recommends Vitamin D for health, stating that amazing things happen when patients' vitamin D statuses reach optimal levels.
- Mentions vitamin D as an existing biomarker that plays a role in mental health, which Function Health includes in their measurements.
- Notes that vitamin D plays a role in immune function.
- Recommends checking vitamin D levels and states that if they had to pick one single intervention for immune health, vitamin D would be it.
- Dr. Hyman discusses vitamin D in relation to sun exposure patterns.
- States that vitamin D supplementation can help with oxidative stress.
- Gave a patient with psoriatic arthritis a little zinc, which contributed to significant improvement in her condition.
- Mentions vitamin D as a key nutrient for supporting immune function.
- States that vitamin D is probably the single most important intervention for immune health, recommending levels of 45 to 70 and emphasizing testing to determine the right dose.
- Recommends ensuring adequate zinc intake on a regular basis for immune support, noting some data on zinc lozenges for early cold.
- Notes that rickets, which causes terrible bone deformities, is caused by vitamin D deficiency.
- Recommends correcting nutrient deficiencies with zinc.
- Notes that vitamin D is an important nutrient for brain performance and aging, and that many people have gaps in these nutrients.
Dr. Eric Berg · Vitamin D · warns
- Dr. Berg warns that the recommended daily intake for vitamin D is based on a massive error and that the actual necessary amount is closer to 8,895 IU, with millions remaining deficient.
- Recommends getting vitamin D levels tested to ensure they are between 50 and 70, as vitamin D is intimately involved in regulating prostate size.
- Recommends ensuring sufficient zinc intake because the prostate needs enough zinc for the conversion from testosterone to DHT to be smooth and optimized.
- Recommends taking at least 10,000 IUs of vitamin D3 every single day in the winter, stating it is the most important vitamin to lower cancer risk.
- Recommends vitamin D to support the immune system, aiming for blood levels between 80 to 100 ng per ml.
- Recommends taking no less than 10,000 IU's of vitamin D3 for osteoporosis, alongside magnesium and K2.
- Recommends increasing vitamin D to restore balance and support healthy blood pressure.
- States that a lack of vitamin D can potentially cause achy bones or crashing mood.
- Recommends taking zinc carnosine for an ulcer or some type of gastric problem.
- States that vitamin D is intimately involved in the immune system and recommends taking at least 10,000 IUs each day.
- Emphasizes the importance of zinc for decreasing viral replication and recommends taking 40 to 60 mg every single day.
- States that taking high doses of vitamin D3 for 14 days can improve mood, sleep, low back pain, skin issues, and blood pressure, as well as act as a natural anti-inflammatory and reduce susceptibility to sickness.
- Notes that birth control pills deplete the body of zinc, which is needed for the brain to make serotonin.
- Mentions that grass-fed liver has vitamin D.
Bryan Johnson · Vitamin D · uses
- Takes 5000 IU of Vitamin D3 in the morning for general health.
- Takes 5000 IU of Vitamin D3 in the morning for general health.
- Mentions that the sunlight assessment claims low vitamin D levels cause the immune system to misfire, and notes that their vitamin D has been measured.
- Takes 5000 IU of Vitamin D3 in the morning for longevity.
- Takes 15 mg of Zinc in the morning for longevity.
- He takes 5000 IU of Vitamin D3 in the morning for general health.
- Takes 5000 IU of Vitamin D3 in the morning for general health.
- Takes 5,000 IU of Vitamin D3 in the morning for longevity.
- Takes 5,000 IU of Vitamin D3 in the morning.
- Takes 15 mg of Zinc in the morning.
- Takes 5,000 IU of Vitamin D3 in the morning.
- He takes 5000 IU of Vitamin D3 in the morning for general health.
- Takes 15 mg of Zinc in the morning for longevity.
- Bryan Johnson's baseline measurements showed low zinc, which was easy to fix by adjusting her protocol and supplements.
Peter Attia · Vitamin D · uses
- Lists vitamin D as one of her staple supplements.
- Suggests that zinc and magnesium could potentially help with vasodilation and sleep, particularly for women experiencing severe symptoms in the luteal phase.
- Notes that several studies show patients taking vitamin D can reduce TPO levels and prolong the honeymoon period of Hashimoto's disease.
- States that in mouse studies, there was a combined effect of alpha ketoglutarate with vitamin D for both sexes.
- Uses vitamin D as an example of how people might dismiss its efficacy due to failed clinical trials that didn't adjust the dose or measure levels.
- In mouse studies, Peter Attia's team found a combined effect of AKG with Vitamin D for both sexes.
- Suggests that supplementing with lots of vitamin D might help overcome the negative effects of phenytoin on bone health by improving calcium absorption, though he is unaware of studies on this.
- Recommends Vitamin D3 as one of the 'big three' micronutrients for bone health, suggesting a daily intake of 800 to 1,000 IU, which can be obtained through sunlight or supplementation.
- Suggests that supplementing with lots of vitamin D might overcome the negative effects of phenytoin on bone health by counteracting increased catabolism of vitamin D and subsequent decreased calcium absorption.
- Recommends vitamin D for people who tend to be vitamin D deficient, such as those living in Portland, Oregon.
- Discusses evaluating vitamin D, understanding deficiency, and optimal levels.
- Discusses the AREDS formula, which initially included C and beta-carotene with zinc and copper, and later replaced beta-carotene with lutein and zeaxanthin, showing it could delay or reduce the conversion of mild to severe macular degeneration.
- Explains that for Wilson's syndrome, which can lead to liver failure, the treatment given to children is zinc, which is inexpensive and effective in outcompeting copper to prevent overload.
- Uses a new irrigant called ZinC and Gent because they are very worried about prosthetic infection.
RAL Summary
Members OnlyTier 4 for Hormone Balance for Men
More Details
Members OnlyBody systems · Combine with · Possible side effects
Body systems: Endocrine system, Reproductive system, Urinary system
Combine with: To further support male hormonal health, muscle building, and overall vitality, consider combining Alpha Force with creatine for enhanced strength and muscle growth. Ashwagandha can be a beneficial addition to help manage stress and further support natural testosterone levels. Additionally, Omega-3 fatty acids can contribute to overall cardiovascular health and inflammation reduction, which indirectly supports hormonal balance.
Possible side effects: In studies, Tongkat Ali raised estradiol in one trial, boron raised estradiol in another, and weekly vitamin D slightly worsened insulin sensitivity in one trial. The vitamin D dose is above the daily recommended limit, so members can take less.
Supplement Facts
Vitamin D3 125 mcg · Zinc 10 mg · Fadogia agrestis, Powder 2000 mg
Supplement Facts
Serving Size 3 Capsule(s)
Servings Per Container 30
Amount Per Serving% Daily Value
| Vitamin D3 | 125 mcg | |
| Zinc | 10 mg | |
| Fadogia agrestis, Powder | 2,000 mg | † |
| Tongkat Ali, Powder | 600 mg | † |
| SA3X | 500 mg | † |
| Stinging Nettle, Powder | 500 mg | † |
| Androsta-3,5-Diene-7,17-Dione | 80 mg | † |
| Boron Glycinate | 30 mg | † |
| Bioperine | 5 mg | † |
† Daily Value not established.
Other ingredients: Gelatin, Rice Flour, Silicon Dioxide, Titanium Dioxide, FD&C Red #40, FD&C Blue#1.
Directions: Suggested Use: For best results, take three(3) capsules twice daily, or six(6) capsules once daily. Can be stacked with any MuscleForce product. For best results use for 8-12 weeks, followed by a 4 week break. For PCT use, start Alpha Force the last week of your cycle.
Label source: NIH label database · Report a label change
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Graded November 3, 2026 by the Reverse Age Lab evidence engine, from human studies, real reviews and our biohacker panel. How we grade. Is this medical advice? No. Rala organizes the published evidence; go over any change with your doctor, especially if you take meds.
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