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GLP-1 receptor agonist

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KSM-66 Ashwagandha, Boron, Vitamin D3, Zinc
| # | Product | Active ingredient | Starting price | FDA status | Score | |
|---|---|---|---|---|---|---|
| 1 | Hims Testosterone Support | — | Best ·$30/mo | supplement | Top ·7.5 | See offer → |
| 2 | Transparent Labs Vitality | KSM-66 Ashwagandha, Boron, Vitamin D3, Zinc | $49/mo | supplement | 7.3 | See offer → |
The active ingredient is enclomiphene, a selective estrogen receptor modulator (SERM). It blocks estrogen receptors in the hypothalamus and pituitary, which the brain interprets as "estrogen is low." In response, the pituitary releases more luteinizing hormone (LH) and follicle-stimulating hormone (FSH), signaling the testicles to produce more of their own testosterone and to keep making sperm. This is fundamentally different from traditional testosterone replacement therapy (TRT), which adds testosterone from outside the body and can shut down the body's own production and reduce sperm counts. Hims sometimes bundles enclomiphene with supporting nutrients (such as zinc and B-vitamins) and, for eligible men, tadalafil for erectile function, but enclomiphene is the workhorse of the formula.
Vitality does not contain testosterone; instead it stacks plant extracts and minerals thought to support the body's own production. KSM-66 ashwagandha is an adaptogen that may lower cortisol and stress signaling, which can indirectly favor testosterone. Tongkat ali (Eurycoma longifolia, LJ100) is theorized to free up bound testosterone and support luteinizing hormone. PrimaVie shilajit and its fulvic acid have been associated with higher total and free testosterone in one trial. Zinc and boron are cofactors involved in testosterone metabolism, while DIM and quercetin are included to support estrogen metabolism, and BioPerine (black pepper extract) is added to improve absorption of the other ingredients. Note these are proposed mechanisms from individual-ingredient research, not effects demonstrated for the combined product.
Enclomiphene has a credible clinical track record for secondary hypogonadism. In a 2014 randomized Phase II trial published in Fertility and Sterility (124 men with morning testosterone below 250 ng/dL), enclomiphene at 12.5 mg and 25 mg raised morning testosterone, LH, and FSH to levels comparable with 1% topical testosterone gel, while conserving sperm counts. A 2025 systematic review and meta-analysis of 10 randomized trials (819 men) found SERM therapy increased total testosterone by a mean of about 274 ng/dL versus placebo (95% CI ~192-356 ng/dL), with LH up ~4.7 IU/L and FSH up ~4.6 IU/L, and no significant difference in testosterone versus testosterone gel. Crucially, unlike testosterone gel (which in Phase III data reduced sperm density by roughly 33-57%), enclomiphene caused only minimal change in sperm density (about 12-15%), preserving fertility. Important caveat: despite this data, enclomiphene's new-drug application (Androxal) received an FDA Complete Response Letter in December 2015 requesting additional Phase 3 work, and development was discontinued for all indications in 2021, so it is not an FDA-approved drug.
Evidence is for the individual ingredients at these doses, not the finished blend (no published trial tests Vitality itself). In Pandit et al. 2016 (Andrologia), 250 mg of PrimaVie shilajit twice daily for 90 days raised total testosterone about 20%, free testosterone about 19%, and DHEA-S about 31% versus placebo in healthy men aged 45-55. A 2022 systematic review and meta-analysis in Medicina (Leisegang et al.) found Eurycoma longifolia significantly increased serum total testosterone across randomized trials (a large but statistically heterogeneous pooled effect), with benefits noted in both healthy and hypogonadal men. An ashwagandha trial in aging, overweight men aged 40-70 (Lopresti et al. 2019, American Journal of Men's Health, using a 21 mg/day withanolide-glycoside extract) found a 14.7% greater rise in salivary testosterone and an 18% greater rise in DHEA-S versus placebo, though it found no significant improvement in fatigue, vigor, or sexual well-being. Real-world results are modest and highly individual; some users report energy or libido benefits, others little change.
Commonly reported side effects of enclomiphene include headache, hot flashes, mood changes, nausea, and breast tenderness or sensitivity. Because it works partly by raising estradiol as well as testosterone, some men notice estrogen-related effects. If tadalafil is added, expect possible headache, flushing, indigestion, back or muscle pain, and nasal congestion. Less common but more serious concerns reported with SERMs in this class include visual disturbances (blurring or floaters) and blood-clot risk; vision changes warrant stopping the drug and contacting a clinician. Long-term safety data specific to enclomiphene is limited, and the 2025 meta-analysis explicitly noted its safety endpoints were underpowered, so ongoing monitoring matters. Seek urgent care for chest pain, a sudden vision change, signs of a clot (leg swelling or pain, shortness of breath), or an erection lasting over four hours.
Most users tolerate Vitality well at the recommended dose. Common, usually mild effects can include digestive upset, drowsiness or sedation from ashwagandha, headache, and occasional GI discomfort from zinc or DIM (DIM can also harmlessly tint urine). More serious but rare concerns center on ashwagandha and tongkat ali: the NIH LiverTox database rates ashwagandha a probable cause of clinically apparent liver injury, with documented case reports of jaundice and cholestatic hepatitis (rare cases have required hospitalization or transplant), and ashwagandha may alter thyroid hormone levels (Denmark banned it in food supplements in 2020 over thyroid, sex-hormone, and reproductive concerns, though industry groups dispute that assessment). Tongkat ali has been associated with raised liver enzymes in some reports. Stop use and see a doctor if you develop jaundice, dark urine, abdominal pain, unusual fatigue, or a rapid heartbeat. As a dietary supplement, Vitality is not reviewed by the FDA for safety and efficacy the way prescription drugs are.
As of 2026, Hims prices its testosterone program by plan length, paid upfront: roughly $199/month on a 3-month plan, about $139/month on a 5-month plan, and around $99/month on a 10-month plan, which bundles medication, provider check-ins, lab monitoring, and shipping. You typically prepay for the full 3-, 5-, or 10-month term, and these prescription-program charges are generally not refundable. Because enclomiphene is compounded and not FDA-approved, it is essentially never covered by insurance, so expect to pay out of pocket; some men find generic clomiphene or, where appropriate, FDA-approved TRT cheaper through a local prescriber and pharmacy. Lab fees and any office visits outside the bundle can add to the total, and prices change frequently, so confirm current figures directly with Hims.
As of 2026, a 60-capsule bottle (30 servings, roughly a one-month supply) runs about $46-$55 depending on retailer (about $46-$47 direct from Transparent Labs, around $54.99 at Amazon and Vitamin Shoppe), or roughly $1.55-$1.85 per serving. Subscribe and save typically takes about $6 off plus free shipping, dropping the direct price to around $41. As a dietary supplement it is not covered by insurance; FSA/HSA cards may apply at some retailers. Buying the generic single ingredients separately is cheaper but sacrifices the matched dosing and third-party testing. Prices vary by retailer and promotion, so confirm the current price at checkout.
This is aimed at adult men with lab-confirmed low testosterone of the secondary (hypogonadotropic) type, meaning the testicles can still work but the brain's hormonal signaling is low or inappropriately normal. It is especially relevant for younger men who want to raise testosterone while preserving fertility, since it does not suppress sperm production the way injected or topical testosterone does. It requires a baseline testosterone test, a licensed provider's review, and a prescription. It is not appropriate for men with primary (testicular failure) hypogonadism, those who only want a "boost" with normal labs, men trying to conceive without medical guidance, or anyone with a hormone-sensitive cancer or significant cardiovascular, liver, or vision conditions. Women, and anyone who is or may become pregnant, must not take it. Always disclose your full history to the prescriber.
Best suited for healthy adult men (often 30+) noticing fatigue, low drive, high stress, or sluggish recovery who want natural hormone support alongside diet, sleep, and resistance training. It is NOT for women, anyone under 18, or men seeking treatment for diagnosed hypogonadism (that requires a physician). Avoid or consult a doctor first if you have liver disease, thyroid disorders, are on thyroid, blood-pressure, sedative, or blood-sugar medication, have a hormone-sensitive condition, or are pregnant or breastfeeding. Ashwagandha has documented case reports of liver injury and may affect thyroid hormone levels, and tongkat ali has been linked to raised liver enzymes in some reports. As with any supplement, discuss it with your clinician before starting, especially if you take prescription drugs.
Transparent Labs Vitality: Transparent Labs Vitality is a clinically-dosed, transparently-labeled herbal testosterone-support supplement combining KSM-66 ashwagandha, tongkat ali (LJ100), PrimaVie shilajit, DIM, quercetin, zinc, and boron. Studies on its individual ingredients show modest total-testosterone gains (shilajit raised total testosterone roughly 20% over 90 days in one trial) in stressed, fatigued, or aging men, but it is not a substitute for prescription testosterone therapy, and no published trial has tested the finished Vitality blend itself. Both are strong options — match the pick to your specific needs, budget, and clinician's guidance.
Editorial comparison, not medical advice. Discuss options with a qualified clinician. Individual results vary.