Meijer Herbal Horny Goat Weed with Maca Review
Meijer Herbal Mens Health Horny Goat Weed With Maca, 60 ct is presented on this page as a dietary supplement built around men's wellness. According to the product details, this herbal dietary supplement combines horny goat weed with maca in an easy to take capsule. The page states that it is formulated to support men's wellness and is designed for daily use, offering a convenient way to incorporate traditional botanical ingredients into a routine. Each bottle contains 60 capsules for ongoing supplementation. The highlights section lists the item as a dietary supplement featuring horny goat weed with maca, with a count of 60. The page lists a UPC of 71928342564 for this item. The listed price is $9.99, and the page shows a Buy 1 Get 1 Free offer, with applied savings appearing in the cart and the final cost determined at checkout. Shoppers can also set up a subscription on the page. The subscription information explains that the item can be received on a regular schedule, that deliveries can be skipped, changed, or cancelled at any time, and that the store will let the customer know before a shipment is sent. The page notes that subscription items earn 2x points for every dollar spent. A section called About Subscriptions and a Set Up Subscription button are provided for customers who want that option. For in-store shoppers, the Ways to Shop section places the product in Aisle F, Section 6 at the Alpine location, with a Check Nearby Stores link for finding other locations. The product belongs to the Meijer Herbal line, and the page lists related herbal supplements such as ashwagandha root, ginkgo biloba, and saw palmetto. The About This Item section contains the product details, an ingredients heading, and a warnings and disclaimer heading, though the ingredient text itself does not appear in the scraped content. Customers are invited to write a review, and the reviews section currently states that no one has reviewed this product yet, so the item shows zero ratings.
Study, Trial or Testing Result Summary
Members Only40 human studies · 28 improved
Two ingredients are present at doses close to those studied. Yohimbe: a review pooling eight trials in men with erection problems found yohimbine roughly doubled or better the odds of improved erections, though alone it did not improve overall sexual function [1]. In one trial, 30 mg daily helped 71% of men versus 45% on placebo [2], and in another, 18 mg daily led 62% to report better sexual function versus 16% on placebo [3]. Tribulus, a full dose only at three servings a day: in 180 men with erection problems, 12 weeks improved sexual function including desire [4], and a pooled review found it improved male sexual function [5]. However, a larger pooled review found the evidence for Tribulus alone insufficient [6], and a small 30-day trial found no benefit. Maca is below the studied dose here; trials used 1,500 mg or more [7], and a review called the trials too few and small [8]. Horny goat weed has only mouse studies, with no human evidence [9]. L-arginine is present only in a trace amount, far below the 1,500 to 5,000 mg studied [10]. Animal and cell studies are never counted.
See all 40 studies →Hide the studies
- Pooled trials of 1227 men with erectile dysfunction found herbal supplements overall raised sexual desire, but evidence for maca specifically was insufficient.Herbal dietary supplements for erectile dysfunction: A systematic review and meta-analysis of randomized-controlled tria…
- Across 10 randomized trials of 540 men with mild to moderate erectile dysfunction, arginine at 1,500 to 5,000 mg improved erectile dysfunction versus placebo or no treatment, but the sexual desire score did not change.The Potential Role of Arginine Supplements on Erectile Dysfunction: A Systemic Review and Meta-Analysis.
- In four trials of 373 men with erectile dysfunction, L-arginine improved sexual function from baseline but worked less well than erectile dysfunction drugs, and the combination worked best.Comparison of efficacy and safety of daily oral L-arginine and PDE5Is alone or combination in treating erectile dysfunct…
- In three trials of 184 men with erectile dysfunction, the combination of L-arginine and pine bark extract improved erectile function and sexual desire scores versus control, with no significant change in testosterone.Efficacy of L-arginine and Pycnogenol ® in the treatment of male erectile dysfunction: a systematic review and meta-anal…
- A review of phytoestrogen trials in menopausal women reported maca improved sexual function, but this was in women and did not address men's libido.Effect of phytoestrogens on sexual function in menopausal women: a systematic review and meta-analysis.
- A review and meta-analysis of supplements for erectile dysfunction found Tribulus terrestris, along with Panax ginseng and L-arginine, improved male sexual function.Dietary Supplements for Erectile Dysfunction: Analysis of Marketed Products, Systematic Review, Meta-Analysis and Ration…
- Across eight randomized trials in men with erectile dysfunction, yohimbine alone or combined with other supplements roughly doubled or better the odds of improved erections versus placebo, but it did not improve overall sexual function when used alone.Yohimbine as a treatment for erectile dysfunction: A systematic review and meta-analysis.
- In 10 studies of 483 men given 400 to 750 mg daily for 1 to 3 months, Tribulus improved erectile dysfunction in 3 of 5 studies that measured it, with little effect on testosterone and an overall low level of evidence.Effects of Tribulus (Tribulus terrestris L.) Supplementation on Erectile Dysfunction and Testosterone Levels in Men-A Sy…
- A review of four placebo-controlled trials found limited evidence that maca improves sexual function, with positive effects on desire in healthy men in one trial but no effect in cyclists, and the trials were too few and small for firm conclusions.Maca (L. meyenii) for improving sexual function: a systematic review.
- In 180 men with mild to moderate erectile dysfunction, 12 weeks of Tribulus extract improved sexual function scores, including sexual desire, more than placebo and was well tolerated.Evaluation of the efficacy and safety of Tribulus terrestris in male sexual dysfunction-A prospective, randomized, doubl…
- In 180 men with low sperm motility, a combination of carnitine, L-arginine and ginseng improved sperm motility and sexual satisfaction scores compared with no treatment.[Treatment with carnitine, acetyl carnitine, L-arginine and ginseng improves sperm motility and sexual health in men wit…
- In 177 men with mild to moderate erectile dysfunction, 3 months of a combination of seaweed, Tribulus and glucosamine improved erectile function, sexual desire and sexual quality of life more than placebo.Alga Ecklonia bicyclis, Tribulus terrestris, and glucosamine oligosaccharide improve erectile function, sexual quality o…
- In 175 adults given 3 grams a day of red or black maca extract for 12 weeks, mood, energy and quality of life improved compared with placebo; the abstract does not give a sexual desire result.Acceptability, Safety, and Efficacy of Oral Administration of Extracts of Black or Red Maca (Lepidium meyenii) in Adult …
- In 148 premenopausal women with a med-related sexual problems (35 took yohimbine), 6 weeks of yohimbine added to treatment did not differ consistently from placebo.Mirtazapine, yohimbine or olanzapine augmentation therapy for serotonin reuptake-associated female sexual dysfunction: a…
- In 124 men aged 30 to 50 with moderate erectile dysfunction, a pine bark and L-arginine aspartate product over 6 months improved erectile function and raised testosterone more than placebo.Investigation of a complex plant extract for mild to moderate erectile dysfunction in a randomized, double-blind, placeb…
- In 116 men with erectile dysfunction after pelvic cancer surgery, a med at 100 mg worked in both groups, especially when L-arginine was added.Read the study on PubMed (11535972) →
- In 116 men with erectile dysfunction after pelvic cancer surgery, a med at 100 mg worked in both groups, especially when L-arginine was added.[Erectile disfunction after non nerve-sparing radical pelvic surgery].
- In 100 healthy married men, a single dose of a herbal syrup containing Tribulus improved desire, arousal, erection, orgasm and satisfaction scores compared with placebo.Efficacy of Herbal Based Syrup on male sexual experiences: A double-blind randomized clinical trial.
- In 98 men with erectile dysfunction, 3 months of a daily ginseng, Tribulus and L-arginine supplement improved erectile scores in men without diabetes but not in men with diabetes compared with placebo.The Effect of the Combination of Ginseng, Tribulus Terrestris, and L-arginine on the Sexual Performance of Men with Erec…
- In 98 men with erectile dysfunction caused by blood vessel problems, 6 g of L-arginine daily for 3 months improved erection scores and penile blood flow, and 74% of those taking it moved to a milder category of erectile dysfunction.Long-term high-dose L-arginine supplementation in patients with vasculogenic erectile dysfunction: a multicentre, double…
- In 86 men with erectile dysfunction without a clear physical or psychological cause, 30 mg of yohimbine daily for 8 weeks gave a 71% response rate versus 45% with placebo.Double-blind, placebo-controlled safety and efficacy trial with yohimbine hydrochloride in the treatment of nonorganic e…
- In 70 older men with erectile dysfunction and low testosterone, taking Tribulus terrestris three times daily for 3 months raised testosterone and improved erectile function scores (from 10.7 to 16.1), with no worsening of urinary symptoms.Tribulus terrestris versus placebo in the treatment of erectile dysfunction and lower urinary tract symptoms in patients…
- In 50 men with erectile dysfunction from physical causes, 5 g of L-arginine daily for 6 weeks led 9 of 29 (31%) to report better sexual function versus 2 of 17 on placebo, while measured blood flow did not change.Effect of oral administration of high-dose nitric oxide donor L-arginine in men with organic erectile dysfunction: resul…
- In 50 men with mild to moderate erectile dysfunction, one month of L-arginine aspartate with Pycnogenol restored erectile function to normal and doubled how often they had intercourse compared with placebo.Improvement of erectile function with Prelox: a randomized, double-blind, placebo-controlled, crossover trial.
- In 48 men with psychogenic impotence, 18 mg of yohimbine daily for up to 10 weeks led 62% to report improved sexual function versus 16% on placebo in the first phase.Double-blind trial of yohimbine in treatment of psychogenic impotence.
- In 45 women with a med-related sexual problems, 3 grams a day of maca for 12 weeks gave slightly higher remission rates than placebo, mainly in postmenopausal women; this study did not include men.Read the study on PubMed (25954318) →
- In 30 men aged 40 and older with erectile dysfunction, 800 mg of Tribulus terrestris daily for 30 days was no better than placebo for erectile function or testosterone levels.Tribulus terrestris versus placebo in the treatment of erectile dysfunction: A prospective, randomized, double blind stu…
- In a small placebo-controlled crossover trial of 26 men with mild to moderate erectile difficulties, a single dose of 8 g L-arginine aspartate with adenosine monophosphate taken before intercourse improved erection measures compared with placebo and was well tolerated, though desire and orgasm scores did not improve.A randomized, double-blind, crossover, placebo-controlled comparative clinical trial of arginine aspartate plus adenosin…
- In 20 mostly female people with a med-related sexual problems, 3 grams a day of maca improved sexual function scores and libido, while 1.5 grams a day did not improve total scores.Read the study on PubMed (18801111) →
- In 9 women with low sexual desire (compared with 7 healthy women), yohimbine at 5.4 mg three times daily for a menstrual cycle raised a brain chemical marker but did not obviously improve sexual desire.Plasma MHPG response to yohimbine treatment in women with hypoactive sexual desire.
- In 8 trained male cyclists, 14 days of maca extract improved self-rated sexual desire compared with placebo.A pilot investigation into the effect of maca supplementation on physical activity and sexual desire in sportsmen.
- In healthy men aged 21 to 56 taking 1,500 or 3,000 mg of maca for 12 weeks, sexual desire improved from week 8 compared with placebo, without changes in testosterone, mood or anxiety.Effect of Lepidium meyenii (MACA) on sexual desire and its absent relationship with serum testosterone levels in adult h…
- In 70 men averaging 67 years old with low libido, 2 months of a Tribulus-based compound improved libido, testosterone and sexual function scores, compared with daily a med which did not raise testosterone.Read the study on PubMed (23173697) →
- In men with erection problems (11 men) and sexually healthy men, up to 30 mg of yohimbine daily had no effect in healthy men and mixed effects in men with erectile problems, with 3 of 11 reporting strong benefit and more sexual activity but no change in intercourse erections.Yohimbine, erectile capacity, and sexual response in men.
- In a single-group study of 54 men with erectile difficulties, three months of propionyl-L-carnitine, L-arginine and niacin produced a small but significant improvement in sexual function scores, with erections improved in 40% of men.Propionyl-L-carnitine, L-arginine and niacin in sexual medicine: a nutraceutical approach to erectile dysfunction.
- In 47 Japanese men with low sperm count and mild erectile dysfunction, 690 mg of L-arginine plus Pycnogenol daily for four months raised sperm concentration and modestly improved erectile function scores.Improvement of seminal quality and sexual function of men with oligoasthenoteratozoospermia syndrome following supplemen…
- In 40 men with erectile dysfunction, 1.7 grams of L-arginine daily for one month, then with added Pycnogenol for two more months, raised the share with normal erections from 5% to 92.5%.Treatment of erectile dysfunction with pycnogenol and L-arginine.
- In an open trial of 9 patients whose sexual function declined on a med, 8 reported better sexual function on yohimbine 5.4 mg three times daily, though side effects led to stopping in 2 cases.Read the study on PubMed (1564046) →
- In a retrospective review of 596 psychiatric outpatients, yohimbine was relatively effective at reversing a med-related sexual problems and was more effective than amantadine or cyproheptadine.Serotonin reuptake inhibitor-induced sexual dysfunction and its treatment: a large-scale retrospective study of 596 psyc…
- In a survey of 99 impotent men who responded about treatment satisfaction, 70 percent of those treated said they were able to have intercourse; oral yohimbine was one of several options offered, and results were not reported separately for it.Patient satisfaction with current impotence therapy.
Review Totals and Summary
Members Only1,500 reviews · 90% positive
I found almost no reviews for the Meijer-branded tablet itself, so this summary draws on feedback for comparable horny goat weed and maca products. These include Nature's Bounty on iHerb, a multi-ingredient capsule on Walmart, and user comments on Drugs.com. Treat it as category-level feedback, not a verdict on the Meijer product. Satisfied customers most often describe a gradual, mild lift in energy and stamina. The Walmart reviews summary lists a noticeable increase in energy among its pros. Some buyers say results appeared within days. Others say improvement came after half a bottle, and some reordered once they saw effects. A Walmart reviewer called the energy boost good but not overwhelming, and said endurance also depends on diet and fitness. Buyers also praise value and a sense of quality. Capsules were described as easy to swallow and simple to fit into a daily routine. Drugs.com comments are more enthusiastic about libido and sexual performance. They describe stronger libido, stamina for workouts and effects that build over a few weeks. Several users say it works best taken alone or with food at breakfast. Some of this is anecdotal, and one reviewer described the effects as almost too strong. The criticisms are fewer and mostly about side effects and strength. One Walmart reviewer said it was fairly strong and caused a little gas. Another reviewer was lukewarm and said a pill alone cannot replace healthy habits. Some buyers rated it only slightly above average, which suggests the effect is subtle or varies from person to person. Walmart's distribution is mostly 5-star, but about 8% of ratings were 1-star. This points to a minority who felt no effect. Some reviews also read as enthusiastic first impressions written before the product had been used for long. Professional sources are more cautious than customers. WebMD says the benefits of horny goat weed are not well defined. Together, the feedback suggests mild energy and vitality gains and occasional stomach upset or gas. Results vary, and effects may take days to weeks. Buyers who expect prescription-level results are likely to be disappointed.
Biohacker Summary
Members Only0 of 10 recommend it
The panel is split on tribulus, the main ingredient, and leans against it: seven of the ten spoke about it, and three of those warn that it does little or nothing for testosterone, with one calling its evidence very weak and another placing it in a junk tier. Two recommend it for libido, with one pointing to women who want to raise testosterone naturally, and two others are neutral, with one saying it is not working on the part of the body most people need help with and another saying he stopped it in favor of a different herb. No one gave a dose or a preferred form for tribulus, and one panelist advised avoiding it for building muscle because the testosterone rise is too small. Maca, a smaller ingredient in this product, is mostly recommended for libido, with one panelist citing 2 to 3 grams a day and several advising to take it early in the day because it can disturb sleep.
See all 9 biohackers →Hide the biohackers
Thomas DeLauer · Tribulus Terrestris · neutral
- Mentions that more tribulus could be beneficial for testosterone, but it's not working on the axis that most people need help with.
- Recommends maca, explaining it works on the hypothalamic-pituitary axis without directly altering hormone levels.
- Warns against taking maca root before bed because it can increase energy, blood pressure, and blood flow, which may negatively impact sleep, suggesting it be taken earlier in the day.
- Advises replacing tribulus with Tongkat Ali, stating that it has negligible impact on testosterone levels.
- Is a huge fan of low-dose yohimbe personally, noting its science and how it blocks alpha adrenergic receptors, and he used yohimbe cream on his abdomen for stubborn fat.
- Recommends Arginine Nitrate and other arginines to improve tissue quality and enhance power output during workouts.
- Recommends Arginine Nitrate for enhancing tissue quality and muscle performance.
- Recommends taking L-Arginine, possibly with GABA-influencing foods, as it can increase blood flow to the brain and significantly boost GABA levels in the brain, which helps with calmness.
- Recommends adding L-Arginine, a dirt cheap supplement, along with Gaba-rich foods, to increase Gaba's availability to cross the blood-brain barrier, especially the day after drinking.
- Notes that Sacha Inchi protein is high in Arginine, which is being investigated for its influence on obesity, mitochondrial biogenesis, brown adipose tissue, and fatty acid oxidation genes.
- Recommends maca for both men and women to improve libido and other markers of sexual health, noting that it may take a while to trigger its adaptogenic effects.
- Recommends arginine to combat erectile dysfunction and improve sexual desire, citing a meta-analysis that found 1.5 to 5 grams was effective.
- Recommends getting arginine in the diet, as it is a strong activator of mtor, which is desired for building muscle and creating big spikes in mtor for short amounts of time.
- Has been taking black maca mixed with ashwagandha, usually around 4 or 5 p.m., and has noticed it increases his libido.
Siim Land · Tribulus Terrestris · warns
- States that Tribulus terrestris, a famous old-school testosterone booster, will not increase testosterone, citing a large meta-analysis.
- Explains that blood vessels normally make nitric oxide from the amino acid L-arginine through an enzyme called eNOS.
- States that Tribulus terrestris and similar supplements do almost nothing.
- Warns that Tribulus terrestris, a known testosterone booster, has very weak evidence for its effects on testosterone, with most studies showing no significant increase or only a small increase in men with low baseline testosterone.
- Places Tribulus Terrestris in the 'junk tier', stating there is no evidence it increases testosterone levels or helps with erectile dysfunction.
- Warns against Tribulus Terrestris, calling it the most generic testosterone-boosting supplement with no evidence of increasing testosterone levels or helping with erectile dysfunction.
- Notes that arginine is good for increasing nitric oxide and is found in many pre-workout supplements, but there are conflicting thoughts on its effectiveness.
- Tells older people to take Arginine Ketoglutarate because the arginine is helpful as a low-key vasodilator.
- Recommends Arginine before workouts to promote blood flow, which leads to better workouts and physical performance.
- Used to take Arginine but switched to Agmatine sulfate after discovering a mutation in his NOS3 gene, which synthesizes nitric oxide, and noticed massive differences in his 'pump' during workouts.
- Warns that Yohimbe mimics adrenaline, which can lead to overstimulation.
- Warns that Arginine can have negative adverse reactions with meds like a med, advising caution and checking product packaging for interactions.
- Suggests swapping out calcium Alpha-ketoglutarate for Arginine Alpha-ketoglutarate, especially if not on a low calcium diet, as it does not contain calcium.
- Suggests taking a little extra arginine when fighting an infection, as it is used a lot by the body during an infection and can help convert to citrulline.
Dave Asprey · Tribulus Terrestris · neutral
- Mentions tribulus as a supplement that can raise testosterone levels for libido.
- Increased her Mighty Maca supplement intake for cardiac health and to increase nitric oxide.
- Dave Asprey discusses maca as part of an adaptogen trio that works together for stress response and human performance.
- Mentions maca root as a supplement that can raise testosterone levels for libido.
- Dave Asprey recommends Joy Mode, an electrolyte packet for sexual performance, to be taken one packet about 45 minutes before sex, as it contains clinical doses of L-citrulline, arginine nitrate, ginseng, and vitamin C to increase nitric oxide levels.
- Has tried arginine over the years but did not notice a significant difference in blood flow.
- Recommends L-arginine, or anything that leads to vasodilation, to boost the power of EWOT when taken beforehand.
- Suggests trying tribulus as an herbal step to optimize testosterone levels.
- Has added Arginine to his Wonderfeel product as a powerful antioxidant to reduce DNA damage, which in turn reduces the need for PARP to consume NAD, and considers it a foundational longevity molecule.
- Took Yohimbe one time before skating and felt it amplified his fear and heart rate, so he never took it again.
- Notes that companies are now creating pre- and post-op surgical supplementation with arginine, similar to what he had figured out years ago.
- Dave Asprey says that the case for arginine isn't very strong and that taking high-dose Arginine can actually divert metabolism away from nitric oxide production and make things worse if you have endothelial dysfunction.
- Discusses a new study showing arginine supplementation causing more harm than good, and suggests evaluating supplements based on multiple pillars of evidence, such as lifespan extension in animals and epidemiological data in humans.
- States that Maca was added to the Nutrafol formulation because its alkaloids function at different levels of the hypothalamus reactions and the hypothalamus-pituitary-gonadal axis, helping with estrogen balance and countering cortisol effects.
Andrew Huberman · Tribulus Terrestris · recommends
- Discusses Tribulus as a supplement that may support a healthy libido.
- Discusses Maca Root as a supplement that may support a healthy libido.
- Recommends maca, stating that studies show consumption of 2 to 3 grams per day can increase subjective reports of sexual desire, independent of hormone systems, and should be consumed early in the day due to its stimulant properties.
- Mentions Arginine in the context of growth hormone supplements.
- Huberman mentions Maca root as another supplement for libido, noting that its mechanism of action is not fully understood but may involve estrogen receptor modulation or dopaminergic tone changes.
- Huberman mentions arginine as a nonprescription substance that increases blood flow.
- Recommends Maca Root for hormone health.
- Recommends Arginine for growth hormone.
- He recommends Tribulus terrestris, specifically the brand Momentous, at a dose of 600 milligrams daily, as a tool to increase libido and sex drive.
- Discusses Tribulus Terrestris, noting that while its effect on testosterone for fitness is unclear, some studies show it can increase free and bio-available testosterone in postmenopausal women and improve sexual desire and function in certain female populations.
- He recommends Maca root, specifically the brand Momentous, at a dose of 1.5-3 grams daily, as a tool to increase libido and sex drive.
- Recommends Maca, citing studies that show consumption of 2 to 3 grams per day can increase subjective reports of sexual desire in both men and women, independent of hormone systems, and can even offset a med-induced sexual dysfunction.
- Mentions Maca as an example of direct and indirect effects.
- Notes that Maca root can indirectly increase dopamine by reducing cortisol, but it is not a direct increase and is therefore subtle compared to other compounds and behaviors.
Ben Greenfield · Tribulus Terrestris · recommends
- Recommends Tribulus terrestris as a phenomenal herbal for women to naturally raise testosterone levels, particularly when prescription testosterone is not an option.
- Mentions an arginine link to thymus metabolism, noting that immune cells require a lot of arginine.
- Sometimes adds maca to her powdered green drink.
- Notes that maca is an ingredient in MTE.
- Recommends chia and flax seeds as they are rich in arginine, which can help supply nutrients that patients may be lacking.
- Recommends L-arginine, around 5 grams, as an aid for sexual performance and to combat erectile dysfunction.
- Mentions Tribulus terrestris as an herb that seems to have an impact on testosterone.
- Mentions arginine as a supplement that can increase blood flow for pre-workout.
- Will explore maca root as a natural libido enhancer.
- Ben Greenfield recommends maca root as a potent adaptogenic herb that can enhance both libido and fertility, support adrenal function, and help with a med-induced sexual dysfunction.
- States that Tribulus Terrestris is a phenomenal herbal for raising natural testosterone levels in women.
- Julie sometimes adds maca to her powdered green drink.
- Doesn't think Tribulus has any peer-reviewed data behind it and believes it's part of a cyclical supplement industry where products are proven not to work, disappear, and then return as the 'next greatest thing'.
- Ben likes it when he takes a pre-workout like arginine and gets a wonderful rush in energy and blood flow.
Dr. Rhonda Patrick · Tribulus Terrestris · warns
- States that Tribulus, along with D-aspartic acid and fenugreek, has been disproven for its effects on testosterone.
- Recommends arginine as a blood flow enhancer that boosts nitric oxide, opens up blood vessels, and can improve how one feels during endurance or high-rep sessions, also sharpening mental clarity.
- Notes that arginine has fallen out of favor as a performance enhancer due to bioavailability issues and concerns about cold sores, with citrulline now being the preferred approach.
- Discusses whether nitric oxide boosters like beetroot, citrulline, and arginine work.
- The naturally occurring amino acid arginine makes cavity-prone dental plaque less acidic after sugar intake, potentially making plaque less damaging during periods of sugar exposure.
Dr. Eric Berg · Tribulus Terrestris · warns
- Advises avoiding tribulus for muscle building, as it increases testosterone but not enough to build muscle.
- Does not recommend yohimbe or yohimbine, extracted from tree bark, because it tends to increase adrenaline and help with weight loss and libido, but has side effects.
- Recommends consuming arginine, along with proline and ornithine, in the meal that breaks a prolonged fast to get the benefits of stimulating stem cells.
- Recommends arginine as a potent way to increase growth hormone, but warns against taking it too close to a workout as it will lower growth hormone.
- Explains that herpes and shingles viruses need the amino acid arginine to survive.
- Recommends L-arginine to increase nitric oxide to help prevent heart attack.
- Mentions that Arginine can trigger nitric oxide.
- Says Maca root is good for energy and sexual function like libido, but Ashwagandha offers similar effects with more stress-reducing and hormone-balancing benefits, and helps with sleep.
- Recommends taking 3 to 6 grams of Arginine daily on an empty stomach 30 minutes before a workout, as it increases growth hormone by inhibiting somatostatin.
- Recommends L-arginine as one of the best natural remedies for hypertension because it supports the production of nitric oxide.
- Recommends taking stimulatory herbs like maca in the morning to increase energy.
- Mentions L-Arginine as a natural form that increases nitric oxide, which can help with erectile dysfunction.
- Recommends L-Arginine as a solution with minimal side effects to help make more nitric oxide and manage high blood pressure, suggesting taking half a scoop or a whole scoop each day in powder form.
- Mentions that some people use L-arginine, an amino acid, and notes that some studies show it works for erectile dysfunction.
Dr. Mark Hyman · Arginine · neutral
- Notes that arginine is important for nitric oxide production, which dilates blood vessels and helps with inflammation.
- Mentions arginine as one of the things that can be used to repair mucosal membranes as part of the 'repair' step in the 4R program.
- States that Maca, an herb, improves sperm parameters.
- Recommends Maca for men, stating it improves sperm function and health.
- Mentions that low testosterone can sometimes be supported with herbs like Maca, which has a long history of use and research.
- Recommends certain supplements like Arginine to naturally help build growth hormone.
- Explains that Arginine is an amino acid that is a precursor for nitric oxide, which causes vasodilation and can help lower blood pressure.
- Started taking Maca after another person said it was the only thing to take.
- Recommends maca as an adaptogen that can be helpful for people with libido issues.
- Adds maca powder to his morning protein shake for polyphenol intake.
- Raises the question of whether taking arginine, which increases nitric oxide in the body, could be beneficial.
- Notes that foods containing arginine, like nuts, can activate the herpes virus.
- Discusses whether people should be taking arginine to increase nitric oxide in the body, noting that there are dietary supplements that introduce arginine precursors and L-arginine.
- Recommends maca as a food that acts as a prebiotic, helping Akkermansia muciniphila to flourish and balance the gut ecosystem.
Peter Attia · Arginine · neutral
- Notes that nitrogen from arginine goes to nitric oxide, which is involved in vasodilation.
- Notes that the Tor pathway evolved to detect both leucine and arginine, at least in most tissues, but the reason for sensing these two structurally different amino acids is a mystery.
RAL Summary
Members OnlyTier 4 for Libido for Men
The review summary says almost no reviews of the Meijer tablet were found and draws instead on other brands such as Nature's Bounty and a different multi-ingredient capsule, so the reviews and the 1500 review count cannot be taken as reviews of this product. Its reviews are set aside, so it is graded on its studies alone. Human studies support Tribulus Terrestris (6 of 10 human studies showed an improvement), but there are not yet enough reviews to confirm it (0).
Take 3 servings a day (6 capsules) to match the dose that worked in the studies.
- Emerging: not enough evidence to rank higher yet.
Where the evidence disagrees: 4 of the 40 human studies found no effect.
More Details
Members OnlyBody systems · Combine with · Possible side effects
Body systems: Reproductive system, Nervous system, Endocrine system, Cardiovascular system
Combine with: For its intended libido and sexual-function purpose, consider pairing with L-citrulline or L-arginine for nitric oxide and blood flow, zinc and vitamin D for testosterone support, tongkat ali or fenugreek for male hormone balance, and Panax ginseng for energy and sexual performance. If the user's actual goal is adrenal support, add ashwagandha, rhodiola rosea, vitamin C, pantothenic acid (B5) and magnesium glycinate, and keep in mind that Epimedium can be stimulating and may interfere with meds, so check with a healthcare provider first.
Possible side effects: Tribulus was well tolerated in its main trial; in a small yohimbine study, side effects led two of nine people to stop.
Supplement Facts
Horny Goat Weed extract 500 mg · Maca extract 300 mg · Tribulus terrestris extract 250 mg
| Horny Goat Weed extract | 500 mg | † |
| Maca extract | 300 mg | † |
| Tribulus terrestris extract | 250 mg | † |
| Yohimbe extract | 80 mg | † |
| L-Arginine Hydrochloride | 40 mg | † |
Other ingredients: Rice powder, Gelatin Capsule, Vegetable Magnesium Stearate, Silica.
Directions: Suggested Use: As a dietary supplement for adult men, take two (2) capsules daily with the meal of your choice.
Barcode (UPC) 713733372435 · 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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