Introduction: The Essentials

Provacyl targets men over 40 and "andropause", meaning the gradual decline in testosterone with age, and it says it supports testosterone as well as growth hormone. Per a third-party label listing, the contents are D-aspartic acid, ZMA, muira puama, ginkgo, chaste berry, ginseng and DHEA, plus an amino acid blend with no amounts stated. Most amounts sit far below the doses researched. For DHEA, a two-year placebo-controlled trial in older men used nearly four times this dose and found no improvement in body composition, performance or quality of life. Think you might have symptoms of low testosterone? Have a doctor test you before anything else. We set Provacyl next to the other products we've reviewed in this article.

For every product, we look at the current formula and disclosed doses, whether the product itself has gone through a published trial, what the ingredient research shows, the guarantee terms and the main safety cautions. As disclosed above, we earn affiliate commissions when you buy through our links.

Our Top Pick for Testosterone Support: Testosil

Our top pick: Testosil

Top pick: testosterone-support formulas · Lifetime Money-Back Guarantee (conditions apply)

Buy Testosil on the official site
🛡️ Lifetime Money-Back Guarantee (conditions apply) · Official site · Read the refund conditions before you buy

*Results differ from person to person. Not intended to diagnose, treat, cure or prevent any disease.

Testosil, from Leading Edge Health, is a testosterone support formula taken as 4 capsules. It uses D-aspartic acid and KSM-66 ashwagandha (300 mg per serving) as its base, then adds zinc, vitamin D and botanicals. Every dose is disclosed, though no clinical trial of the product exists. We'd point a healthy man toward it if he wants KSM-66 ashwagandha, a published lab certificate, doses he can read and a long refund window. As a finished product it hasn't been tested, some doses are short of research amounts, and care is needed with medications and other supplements because of the ashwagandha, zinc and vitamin D.

How to Judge Products in This Category

Before you compare individual products, run through these checks first:

Product Rankings

The ranking reflects our overall assessment of ingredients and doses, published evidence, openness about the formula, guarantee terms, safety and value:

ProductBest forEvidenceReview
1. TestosilTop pick: testosterone-support formulasNo product trial; KSM-66 has small trialsRead the full review
2. TestRXa zinc + magnesium (ZMA) formulaNo product trialRead the full review
3. GenF20 PlusTop pick: HGH-releaser supplements (weak evidence)1 product trial (main result not significant)Read the full review
4. ProvacylAimed at men over 40 (contains DHEA)No product trialRead the full review

Swipe for more

#1 — Testosil — In-Depth Look

Top pick: testosterone-support formulas | Lifetime Money-Back Guarantee (conditions apply)

Leading Edge Health makes this 4-capsule testosterone support formula. It is built on D-aspartic acid and KSM-66 ashwagandha (300 mg per serving), with zinc, vitamin D and botanicals added. Doses are disclosed, but the product itself has no clinical trial.

Testosil could suit a healthy man who wants a KSM-66 ashwagandha formula with every dose disclosed, a published lab certificate and a long refund window. Still, it has never been tested as a finished product and several doses fall short of the research. Its ashwagandha, zinc and vitamin D content also call for care with medications and other supplements.

Our Findings

See Testosil Pricing

Top pick: testosterone-support formulas · Lifetime Money-Back Guarantee (conditions apply)

Buy Testosil on the official site
🛡️ Lifetime Money-Back Guarantee (conditions apply) · Official site · Read the refund conditions before you buy

*Results differ from person to person. Not intended to diagnose, treat, cure or prevent any disease.

Read our complete Testosil review

#2 — TestRX — In-Depth Look

Best for: a zinc + magnesium (ZMA) formula | 67-day guarantee advertised (terms not confirmed)

This 4-capsule testosterone support formula combines D-aspartic acid, fenugreek, zinc, magnesium, vitamin B6 and vitamins D3 and K2. Doses are disclosed. No ashwagandha is listed, and the product has no clinical trial.

TestRX could suit a man who wants a simple formula with every dose disclosed, no ashwagandha, and moderate zinc and vitamin D. Its core ingredients have weak or negative evidence for raising testosterone, and the product itself has never been tested.

Our Findings

See TestRX Pricing

Best for: a zinc + magnesium (ZMA) formula · 67-day guarantee advertised (terms not confirmed)

Buy TestRX on the official site
🛡️ 67-day guarantee advertised (terms not confirmed) · Official site · Read the refund conditions before you buy

*Results differ from person to person. Not intended to diagnose, treat, cure or prevent any disease.

Read our complete TestRX review

#3 — GenF20 Plus — In-Depth Look

Top pick: HGH-releaser supplements (weak evidence) | 67-Day Money-Back Guarantee (seller's terms apply)

Leading Edge Health sells this amino acid tablet and oral spray as an 'HGH releaser.' It was tested in one small 2015 trial, and the main IGF-1 result was not significant.

GenF20 Plus could suit a healthy adult who wants to try an HGH releaser backed by a real refund policy and who keeps expectations modest. Its one trial did not show a significant IGF-1 increase over placebo overall. It also never measured growth hormone or showed changes in body fat, energy or sleep.

Our Findings

See GenF20 Plus Pricing

Top pick: HGH-releaser supplements (weak evidence) · 67-Day Money-Back Guarantee (seller's terms apply)

Buy GenF20 Plus on the official site
🛡️ 67-Day Money-Back Guarantee (seller's terms apply) · Official site · Read the refund conditions before you buy

*Results differ from person to person. Not intended to diagnose, treat, cure or prevent any disease.

Read our complete GenF20 Plus review

#4 — Provacyl — In-Depth Look

Made for men over 40 (contains DHEA) | 67-day guarantee advertised (terms not confirmed)

Provacyl is a men's 'andropause' formula, taken as 4 capsules. Its contents include DHEA, ZMA, D-aspartic acid, muira puama, ginkgo, ginseng and other botanicals, and an amino acid blend with unquantified amounts. The product has no clinical trial of its own.

Provacyl could attract a man looking for a wide 'andropause' formula. What it really delivers is many ingredients in mostly small doses together with 20 mg of DHEA, and no part of it has been tested in product form. Since DHEA is a hormone, men who have prostate or other hormone-sensitive conditions, and athletes who face testing, shouldn't use it unless a doctor advises otherwise.

Our Findings

Strengths and Drawbacks

See Provacyl Pricing

Made for men over 40 (contains DHEA) · 67-day guarantee advertised (terms not confirmed)

Buy Provacyl on the official site
🛡️ 67-day guarantee advertised (terms not confirmed) · Official site · Read the refund conditions before you buy

*Results differ from person to person. Not intended to diagnose, treat, cure or prevent any disease.

Read our complete Provacyl review

Buying Guide: What to Check

Whichever product in this category you consider, check these points before you buy:

Safety Considerations

The products discussed in this article are sold as dietary supplements, cosmetics or consumer devices, not medicines. None is intended to diagnose, treat, cure or prevent any disease. These statements have not been evaluated by the Food and Drug Administration (FDA).

Speak with a qualified healthcare professional before you start any supplement, especially if you take prescription medication, have a medical condition, or are pregnant or breastfeeding. Results differ between people.

Final Recommendation

We rank Provacyl last of the products here. Nobody has tested it, most doses are small, and because it contains DHEA, men with prostate or other hormone-sensitive conditions should avoid it unless a doctor advises otherwise. If testosterone support is what you want, we'd name Testosil first, as it discloses all its doses, though it hasn't been tested as a product either. Raise symptoms of low testosterone with a doctor before trying any supplement. If you buy, go through the official site so the money-back guarantee remains available, and read its conditions first.

Where to Buy It

Top pick: testosterone-support formulas · Lifetime Money-Back Guarantee (conditions apply)

Buy Testosil on the official site
🛡️ Lifetime Money-Back Guarantee (conditions apply) · Official site · Read the refund conditions before you buy

*Results differ from person to person. Not intended to diagnose, treat, cure or prevent any disease.