CATALO Men's Oyster Complex Formula Review
CATALO Men's Oyster Complex Formula is a 60-tablet dietary supplement presented as a 3 in 1 complex for male vitality. According to the product information, the oysters used are extracted from premium grade oyster species captured at peak seasons, and a freeze-drying technology is used to preserve the nutrients of the oysters. The product is said to provide nutrients such as amino acids and chelated zinc, and the listing states that clinical studies show it suits the nutritional needs for healthy sperm. The formula is designed to support men's health and strength, combining maca extract and chelated zinc to support men who are preparing to have babies. The overview lists the following claims: support male vitality, provide sperm-health nutrients, reduce tiredness and fatigue, support energy level, clinically proven sperm health, dietary supplement, and manufactured by a cGMP certified facility. The highlighted ingredient breakdown names Maca for developing strength, Zinc for maintaining sperm health, and Oyster for supporting pre-conception. The supplement facts panel for a serving of 2 tablets, with 30 servings per container, lists 5 calories, 15 mg sodium, less than 1 g total carbohydrate, 32 mg zinc as chelated zinc (291% daily value), 640 mg oyster extract, 160 mg maca tuber extract, and 160 mg chelated zinc. The suggested use is to take 1 to 2 tablets once daily after meal, as a dietary supplement for adults. The label notes the product contains crustacea and crustacean products, and that it has no artificial flavors or colors and no preservatives. The warnings advise consulting a healthcare practitioner if taking medicine or having a medical condition, and discontinuing use two weeks prior to surgery. The product should be stored in a cool, dry place out of reach of children, and should not be used if the cap is broken. The brand describes its philosophy as care, vitality, and longevity, emphasizing natural high transparency, wholesome all-life stage care, and potency quality and efficacy. The product code is CAT-02523, the UPC is 810399025238, the package quantity is 60 count, and the best by date shown is 09/2029. The page lists a certification of GMP and labels it preservative-free with no artificial colors or flavors.
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Study, Trial or Testing Result Summary
Members Only31 human studies · 11 improved
Oyster extract, the main ingredient at 640 milligrams, has no human studies for men's sexual function. Zinc is listed at 160 milligrams, above the daily recommended limit, so members may prefer less. Zinc alone has been tested for sexual function only in small studies of men on kidney dialysis, and the results conflict. Two early trials found benefits [1][2]. A six month placebo-controlled trial found no benefit, with 1 of 9 men on zinc and 2 of 9 on placebo improving [3]. Another trial also found none [4]. A six week study raised testosterone but showed no clear effect on sexual problems [5]. A review of 15 trials did not show that zinc improves sexual function [6]. Maca is present at only 160 milligrams, far below the 2,400 to 3,000 milligrams that helped men's erectile function in placebo-controlled trials [7][8]. Even at full doses the evidence for maca is mixed: one recent pooled analysis judged it insufficient [9], and another found its advantage over placebo was not statistically significant [10]. Animal and cell studies are never counted.
See all 31 studies →Hide the studies
- In a pooled analysis of 57 trials of treatments for a med-related sexual problems, maca responses were more common than placebo but the difference was not statistically significant.Read the study on PubMed (33843553) →
- In a review of 24 trials of herbal products for erectile dysfunction, the single maca trial (50 men) showed very preliminary positive results, while ginseng had the clearest benefit.Herbal Dietary Supplements for Erectile Dysfunction: A Systematic Review and Meta-Analysis.
- In a pooled analysis of 14 trials in 1227 men with erectile dysfunction, evidence for maca was judged insufficient, unlike saffron and ginseng which helped.Herbal dietary supplements for erectile dysfunction: A systematic review and meta-analysis of randomized-controlled tria…
- Across 15 small trials of 352 people with chronic kidney disease, zinc added to dialysis fluid did not raise testosterone, while oral zinc did in one study of 20 men; sexual function itself was not directly shown to improve with zinc.Interventions for treating sexual dysfunction in patients with chronic kidney disease.
- In a review of plant estrogen trials in menopausal women, maca was reported to significantly improve sexual function, but this concerned women, not men.Effect of phytoestrogens on sexual function in menopausal women: a systematic review and meta-analysis.
- In 14 trials of 328 kidney disease patients, zinc in dialysis fluid did not raise testosterone but oral zinc did, with no change in other sex-related hormones; the authors called zinc promising but the evidence limited.Treatment options for sexual dysfunction in patients with chronic kidney disease: a systematic review of randomized cont…
- A review of four placebo-controlled trials found limited evidence that maca improves sexual function: some trials showed benefit in men's desire and erectile function, one in healthy cyclists showed none.Maca (L. meyenii) for improving sexual function: a systematic review.
- A review of 105 trials on ingredients in popular male testosterone and erectile supplements, including zinc, found limited and often contradictory evidence, with no zinc-specific result given in the abstract.A systematic review and evidence-based analysis of ingredients in popular male testosterone and erectile dysfunction sup…
- In 164 men with erectile dysfunction, a multi-ingredient product including zinc taken for 3 months improved erectile scores (about 4 points) and was better when combined with daily a med; zinc alone was not tested.Read the study on PubMed (38731094) →
- In 80 men with late-onset low testosterone symptoms, 3,000 mg of maca daily for 12 weeks improved aging symptoms, erectile function and prostate symptom scores more than placebo.Efficacy and Safety of Maca (Lepidium meyenii) in Patients with Symptoms of Late-Onset Hypogonadism: A Randomized, Doubl…
- In 50 men with mild erectile dysfunction, 2,400 mg of maca extract daily for 12 weeks raised erectile function scores more than placebo (1.6 vs 0.5 points).Subjective effects of Lepidium meyenii (Maca) extract on well-being and sexual performances in patients with mild erecti…
- In 45 women with a med-related sexual problems, 3 g of maca daily 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 24 hemodialysis patients, oral zinc acetate raised zinc levels and significantly improved sexual function and taste compared with placebo.Zinc deficiency: a reversible complication of uremia.
- In a small pilot of 20 mostly female outpatients with a med-related sexual dysfunction, 3 grams of maca root daily improved sexual function scores, while 1.5 grams daily did not.Read the study on PubMed (18801111) →
- In 18 male dialysis patients with sexual dysfunction, 6 months of oral zinc acetate raised blood zinc but did not improve sexual function versus placebo; 1 of 9 on zinc and 2 of 9 on placebo reported improvement.Zinc deficiency and hyperprolactinaemia are not reversible causes of sexual dysfunction in uraemia.
- In 14 men with kidney failure on dialysis, adding zinc chloride to the dialysis fluid for 6 weeks raised blood zinc by 17% but did not improve sexual function, nighttime erections, or testosterone compared with placebo.Absence of a therapeutic effect of zinc in the sexual dysfunction of haemodialysed patients.
- In eight impotent male dialysis patients with low zinc, zinc given through dialysis markedly improved potency in all four men treated, while none of the four placebo-treated men improved.Reversal of uraemic impotence by zinc.
- In 101 men with metabolic syndrome, adding an antioxidant supplement to standard care improved erectile function and urinary symptoms and raised semen zinc levels over 3 to 6 months, though zinc was not tested on its own.[Antioxidants in combination therapy of men with metabolic syndrome associated with lower urinary tract symptoms and cop…
- In 64 men with metabolic syndrome, a supplement containing zinc and other nutrients for 3 months on top of standard care lowered oxidative stress and blood sugar markers and improved erectile function at 6 months; zinc was not tested alone.[The role of antioxidants in the therapy of metabolic syndrome in men].
- In 100 male hemodialysis patients, 250 mg zinc sulfate daily for six weeks raised testosterone and luteinizing hormone levels, but the authors found no definite effect on sexual dysfunction.Impact of oral zinc therapy on the level of sex hormones in male patients on hemodialysis.
- In 91 men with lifelong premature ejaculation, one daily tablet of a combination containing zinc for 90 days improved ejaculatory control in 60.4% of them, with few side effects.Rhodiola rosea, folic acid, zinc and biotin (EndEP®) is able to improve ejaculatory control in patients affected by life…
- In 71 men with enlarged prostate urinary symptoms, one combination tablet daily for six months did not significantly change erectile function scores, although urinary symptoms and quality of life improved.Daidzein plus isolase associated with zinc improves clinical symptoms and quality of life in patients with LUTS due to b…
- In a survey of 3,745 US men, higher dietary intake of zinc and other trace metals was associated with lower rates of erectile dysfunction.Dietary metal intake and the prevalence of erectile dysfunction in US men: Results from National Health and Nutrition Ex…
- In 720 men with sexual problems, lower blood zinc was linked to lower testosterone, but blood zinc was not linked to sexual function scores.Low serum zinc concentration is associated with low serum testosterone but not erectile function.
- In 217 newly married men, blood zinc was not correlated with semen quality, though low zinc was one predictor of poor semen results alongside high follicle-stimulating hormone.Relationship between serum zinc concentration and semen quality in newly-wed men.
- In men with diabetes and erectile dysfunction, blood zinc levels did not differ significantly from those of control men, while copper was higher in the erectile dysfunction group.Concentration of Selected Serum Trace Elements in Male Patients With Diabetic Erectile Dysfunction: A Case-Control Study…
- In 78 men on long-term dialysis, blood zinc levels did not vary significantly, while low testosterone and high iron were more closely linked to sexual problems.[Sexual dysfunction among 78 Moroccan male hemodialysis patients: clinical and endocrine study].
- Men taking a med chlorthalidone had higher zinc levels than unmedicated men, and zinc levels were not correlated with testosterone or sexual function.Effect of chlorthalidone on zinc levels, testosterone, and sexual function in man.
- In 34 men with obesity who had gastric sleeve surgery, erectile function improved over 12 months, and sperm concentration tracked with changes in blood zinc, but zinc was not given as a supplement.Effect of laparoscopic sleeve gastrectomy on male reproductive function in Chinese men with obesity: a prospective cohor…
- In 28 men with kidney transplants, plasma zinc was measured as one possible cause of impotence, but the abstract does not report a zinc-specific result.Impotence after kidney transplantation.
- Men with inflammatory bowel disease in remission had sexual function similar to control men, while men with Crohn's disease had lower seminal zinc than men with ulcerative colitis.Evaluation of the Quality of Semen and Sexual Function in Men with Inflammatory Bowel Disease.
Review Totals and Summary
Members Only21 reviews · 95% positive
I couldn't find enough verified customer feedback to write this summary honestly. The HKTVmall page shows no reviews. The PNS page for the sister product, the CATALO Men's Maca Vitality Formula, shows zero reviews. The Yoho Hong Kong page shows no review text. The CATALO global page, which I could only see in part, had none that I could read. HKTVmall does say the product has sold more than 2,000 units. That shows demand, but it tells us nothing about what customers experienced. Any list of praised benefits or complaints about pill size, taste or smell would be invented. I would rather not present that as real feedback. For a real review summary, check these places directly: - Reviews on the CATALO global site (global.catalo.com). - Hong Kong forums such as LIHKG and Discuss.com.hk. - Social media posts about the product. Search in Chinese for 男士蠔精配方 or 蠔皇益精配方.
Biohacker Summary
Members Only9 of 10 recommend it
All ten panelists spoke about zinc, the main ingredient, and most recommend it or use it. The most common reasons are testosterone and male fertility, immune support, and wound healing, with others mentioning gut lining, hair, mood, and skin. Two of them said it helps testosterone mainly when zinc levels are low. Doses named were 15 milligrams each morning for longevity, 30 milligrams for sperm health before IVF, and a short course around surgery for healing. Forms mentioned were zinc carnosine for the gut and a zinc sunscreen, and some panelists pair zinc with vitamin C for immunity, and one said it is needed to absorb magnesium. One panelist's post carried a warning tag, but the statements themselves only describe a short course before and after surgery, and no one said they stopped taking it. Maca, a smaller ingredient in this product, was used by one panelist for heart health and stress response.
See all 10 biohackers →Hide the biohackers
Dr. Eric Berg · Zinc · recommends
- Recommends zinc as a trace mineral, noting that modern farming practices deplete it from the soil, leading to low levels in crops.
- Notes that white spots on nails point to zinc deficiency, which is usually depleted by eating sugar and refined carbs.
- States that zinc greatly supports natural killer cells.
- States that zinc is needed to absorb magnesium.
- Recommends ensuring sufficient zinc intake because the prostate needs enough zinc for the conversion from testosterone to DHT to be smooth and optimized.
- Identifies zinc as an essential mineral for building hair, and that deficiency in it leads to a high risk for hair loss.
- Recommends taking zinc carnosine for an ulcer or some type of gastric problem.
- Emphasizes the importance of zinc for decreasing viral replication and recommends taking 40 to 60 mg every single day.
- Notes that birth control pills deplete the body of zinc, which is needed for the brain to make serotonin.
- Added zinc to his creatine product because a deficiency in zinc might make creatine not work as well.
- 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 stimulatory herbs like maca in the morning to increase energy.
- Recommends maca root for supporting the endocrine system in females.
- Mentions maca root, calling it the 'Peruvian a med', and states it can increase testosterone.
Dr. Rhonda Patrick · Zinc · neutral
- Mentions that getting too little zinc may play a role in declining testosterone levels, and that zinc helps the body make testosterone.
- Notes that not getting enough zinc can affect testosterone, as zinc is very important for testosterone synthesis.
- Recommends men take a 30 milligram zinc supplement for sperm health when preparing for IVF.
- 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 nutrients like zinc for men to prioritize sperm mitochondrial health.
- Recommends Zinc, stating it is a critical mineral required for testosterone production and that supplementation corrects deficiency-related low testosterone.
- Recommends correcting deficiencies in zinc to directly increase total testosterone by up to 100+ ng/dL.
- Recommends focusing on zinc to optimize testosterone and hormone health generally, noting that it supports luteinizing hormone production, which stimulates testosterone synthesis and conversion to dihydrotestosterone.
- Recommends zinc as one of the most reliable natural supplements for boosting testosterone if one is deficient, noting it's part of the ZMA combination.
- Recommends increasing intake of zinc if one regularly drinks alcohol.
Andrew Huberman · Zinc · neutral
- Notes that AG1 Pro contains zinc carnosine to support and improve the lining of the gut.
- 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.
- 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.
- 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.
- 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.
- 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.
- Recommends Maca Root for hormone health.
Ben Greenfield · Zinc · warns
- 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.
- 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.
- Sometimes adds maca to her powdered green drink.
- 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.
- Recommends supplementing with zinc if deficient, as multiple trials show significant symptom reduction of tinnitus in zinc-deficient individuals.
- Notes that maca is an ingredient in MTE.
- Notes a new study indicating that zinc is a core dietary antioxidant closely associated with a reduced risk of accelerated biological aging.
- Recommends using hormone building blocks like zinc for hormone optimization.
- Advises taking the GI Repair Formula away from food for best results, unless zinc causes nausea.
- 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.
Dr. Mark Hyman · Zinc · neutral
- Explains that zinc is important for the body's repair crew, helping to heal damaged tissue, and a deficiency can lead to cuts and wounds taking longer to heal.
- Gave a patient with psoriatic arthritis a little zinc, which contributed to significant improvement in her condition.
- Recommends ensuring adequate zinc intake on a regular basis for immune support, noting some data on zinc lozenges for early cold.
- Recommends correcting nutrient deficiencies with zinc.
- Recommends nutrient-dense foods rich in zinc, such as pumpkin seeds and oysters, to reduce inflammation.
- Used zinc as part of a protocol to rebuild the gut microbiome and heal the gut of a nine-year-old girl with severe behavioral issues.
- Notes that zinc supports immune health, helps wounds heal, and plays a key role in growth and tissue repair, and they measure it.
- Mentions zinc is needed for phase one liver functions and inflammation.
- Notes that birth control drains zinc.
- Recommends zinc for immune system support and modulation.
- 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.
- Started taking Maca after another person said it was the only thing to take.
Thomas DeLauer · Zinc · uses
- Adds zinc to their immunity duo because it helps them absorb vitamin C, considering the two together a fantastic combination for fall and winter.
- Recommends zinc, noting it is a cofactor for enzymes that build neurotransmitters, and deficiency can affect mood, happiness, and motivation.
- Mentions that more zinc could be beneficial for testosterone, but it's not working on the axis that most people need help with.
- Compares zinc content, noting salmon has under 1mg while oysters have 74mg per 100g, a 70x difference.
- 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.
- Recommends 15 mg of supplemental zinc if oysters are not realistic, but emphasizes that food source zinc is better as it comes with natural cofactors like copper and selenium.
- Recommends getting zinc, along with vitamin D, magnesium, and calcium, from foods like sardines, as they are important for inflammatory pathways in the gut.
- Explains that zinc is a structural cofactor for an enzyme crucial in testosterone production, and a marginal deficiency is a reversible cause of suppressed testosterone. He recommends getting zinc through pumpkin seeds.
- Explains that zinc is a required cofactor for the 5-alpha reductase enzyme, which converts testosterone into its more potent form, DHT, and that zinc deficiency can impair this conversion.
- Recommends ensuring adequate zinc intake for skin healing and immune response, especially for heavy sweaters or those consuming high phytate foods.
- 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.
- 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.
- Has been taking black maca mixed with ashwagandha, usually around 4 or 5 p.m., and has noticed it increases his libido.
Dave Asprey · Zinc · uses
- Developed a nonnano zinc sunscreen over five years, stating her skin is probably better now than it's ever been.
- 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.
- 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.
- Advises that if someone has a goal, they should probably do simple things like getting more zinc if it helps their goal before using peptides.
- Recommends zinc for muscle and bone formation, stating that without it, the body cannot effectively build muscle and bone even with exercise and protein intake.
- Mentions maca root as a supplement that can raise testosterone levels for libido.
- Dave Asprey mentions zinc as a supplement and cofactor that supports thyroid activation.
- Recommends zinc as a cofactor that can help thyroid function, especially with conversion issues.
- Argues that if you are lacking zinc, ESS60 will not work as well.
- Recommends adequate zinc for healthy DHT signaling.
- States that he genetically needs a ton of zinc for his mitochondria to work, and if he doesn't take enough, his mitochondria don't work.
- 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.
Siim Land · Zinc · recommends
- 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.
- States that fixing zinc deficiency can double testosterone if low testosterone is due to zinc deficiency.
- States that zinc has strong evidence for increasing testosterone, but only if one has low zinc status.
- States that zinc deficiency is observed in children with premature graying of hair.
- Warns that supplementing 250 mg of zinc sulfate, which provides 55 to 60 mg of elemental zinc, is above the tolerable upper limit and can cause side effects like reduced copper absorption, anemia, immune dysfunction, GI stress, abdominal pain, diarrhea, and a metallic taste.
- States that zinc helps with immunity, wound healing, and testosterone levels, acknowledging its importance as a mineral and placing it in the 'good tier' despite not personally finding much value from it.
- Used to take zinc in the past but no longer does, as he has already tested most supplements.
- Recommends Zinc, acknowledging its importance as a mineral for immunity, wound healing, and testosterone levels, especially for those with low zinc.
- Discusses Zinc as a supplement.
- Consumes maca root as it is an ingredient in the coffee he drinks.
- Mentions that Not Your Average coffee has blends with maca.
- Lists maca as an adaptogenic herb that can help with stress.
- Adds maca to his collagen shake, noting that it is high in copper and manganese, which are bone-building and collagen-building minerals.
Bryan Johnson · Zinc · uses
- Takes 15 mg of Zinc in the morning for longevity.
- Takes 15 mg of Zinc in the morning.
- 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.
- Recommends adequate Zinc for hair health, noting it is in the Blueprint stack.
Peter Attia · Zinc · recommends
- Suggests that zinc and magnesium could potentially help with vasodilation and sleep, particularly for women experiencing severe symptoms in the luteal phase.
- 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.
- Discusses the AREDS formula, which includes C, E, beta-carotene, zinc, and copper, and later lutein and zeaxanthin instead of beta-carotene. Studies showed it could delay or reduce the conversion of mild to severe macular degeneration but had no effect on severe disease or preventing it in healthy individuals.
- Mentions that a survey of doctors showed they recommend Zinc for COVID-19, but notes there is no real evidence behind it.
- Mentions zinc pyrithione as a treatment protocol for dandruff, which addresses malassezia yeast overgrowth in the scalp.
RAL Summary
Members OnlyTier 4 for Sexual Health for Men
The main ingredient, oyster extract, is unstudied, maca is at a trace dose, and zinc studies in dialysis patients conflict, with a review finding no proven benefit [6]. Only 21 reviews have been counted, too few to rank higher.
- Emerging: not enough evidence to rank higher yet.
Where the evidence disagrees: 13 of the 31 human studies found no effect.
More Details
Members OnlyBody systems · Combine with · Possible side effects
Body systems: Reproductive system, Endocrine system
Combine with: For men, this oyster and zinc base pairs well with L-arginine or L-citrulline for nitric oxide and blood flow, Panax ginseng or maca for libido and stamina, and ashwagandha or tongkat ali to support healthy testosterone and stress balance. Vitamin D, magnesium, and boron may further support hormonal health, and copper is worth considering if taking zinc long term, since high zinc intake can deplete copper. Women seeking sexual function support should instead look at products with ingredients like maca, Tribulus, saffron, L-arginine, or ginseng, and consult a healthcare provider to rule out hormonal, medication, or menopause-related causes.
Possible side effects: No major side effects reported. The zinc dose is above the daily recommended limit, and the product contains crustacean ingredients, which matters for people with shellfish allergy.
Supplement Facts
Oyster Extract, Natural 640 mg · Maca Tuber Extract, Natural 160 mg · natural Zinc 160 mg
| Oyster Extract, Natural | 640 mg | † |
| Maca Tuber Extract, Natural | 160 mg | † |
| natural Zinc | 160 mg | † |
| Energy | 6 Calories | † |
| Total Fat | 0.3 g | |
| Carbohydrates | 0.3 g | † |
| Protein | 0.5 g | |
| Sodium | 7 mg |
Other ingredients: Microcrystalline Cellulose, Stearic Acid, Calcium Phosphate, Silicon Dioxide, Croscarmellose Sodium, Magnesium Stearate, Hydroxypropyl Cellulose, Hypromellose, Confectioner's Glaze, Polyethylene Glycol, Carnauba Wax.
Directions: Serving Directions For adults, take 1-2 tablets daily. Take after meal
Label source: NIH label database · Report a label change
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Graded November 11, 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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