For men asking about hormones
Vapofil, Wild Yam and Testosterone: What the Sources Say
Quick answer: Wild yam is in Vapofil at 20 mg a serving, and it is often linked to hormones. Memorial Sloan Kettering says there is no evidence the human body can convert its diosgenin into progesterone. Its listed uses are menopausal symptoms, cough and arthritis. No testosterone claim is made on the label.
Why is wild yam in a men's formula?
Wild yam is a root. The Vapofil panel lists it as wild yam root extract, Dioscorea villosa, at 20 mg per two-capsule serving. It is the second row on the panel, and it sits between saw palmetto and sarsaparilla.
Its reputation in men's products comes from a chemical called diosgenin. In a laboratory, diosgenin can be used as a starting material to make steroid hormones. A step further and the argument writes itself: wild yam contains the raw material for hormones, so eating it must raise your own.
That jump is the whole story, and it is the part the sources push back on. This post follows the argument one step at a time so you can see where it breaks.
Does wild yam diosgenin turn into testosterone in the body?
The source that speaks to this directly is Memorial Sloan Kettering Cancer Center. Its page on wild yam says: there is no evidence that the human body can convert diosgenin into progesterone. Progesterone is the hormone the argument usually names, and testosterone is further down the same chain. If the first step is not shown, the later ones have nothing to stand on.
This is the clearest case on the panel of a laboratory process being mistaken for a biological one. A chemist can do something with a compound. A body that eats the compound is a different system. No source this site uses reports that the second follows from the first.
So the plain answer to the question in this section is that no, no source here shows that. The bottle itself does not claim it, and neither will we.
What is wild yam actually listed for?
The same Memorial Sloan Kettering page lists uses, and none of them is about men's sexual function. The three listed uses are menopausal symptoms, cough and rheumatoid arthritis. For the first of these, the source calls the evidence limited and mixed.
| Point | What is published |
|---|---|
| Plant and part | Dioscorea villosa, root |
| Amount in Vapofil | 20 mg per two-capsule serving |
| Uses listed by Memorial Sloan Kettering | Menopausal symptoms, cough, rheumatoid arthritis |
| Strength of evidence for menopausal symptoms | Limited and mixed |
| Diosgenin to progesterone in the human body | No evidence, per Memorial Sloan Kettering |
| Testosterone or fertility findings | Not published in the sources this site uses |
| Standardisation in Vapofil | Not published |
Look at the second to last row. People search for wild yam together with testosterone and fertility. The sources this site holds say nothing on either, so this page will not.
What are the key facts?
- Wild yam root extract (Dioscorea villosa): 20 mg per two-capsule serving.
- Diosgenin can be turned into steroid hormones in a laboratory. The body does not do this, per Memorial Sloan Kettering.
- Listed uses at Memorial Sloan Kettering: menopausal symptoms, cough and rheumatoid arthritis. Evidence for the first is limited and mixed.
- Wild yam has estrogenic effects. People with hormone-sensitive cancers should talk to their physicians.
- Fertility and testosterone findings for wild yam: not published in the sources this site uses.
- Vapofil is not a treatment for low testosterone, and the label does not say it is.
Are there cautions with wild yam?
Yes, and they are about hormones in the other direction. Memorial Sloan Kettering notes that wild yam has estrogenic effects, and that patients with hormone-sensitive cancers should talk to their physicians before they take it.
That matters for the reader who thinks of wild yam as a harmless root. If you or a partner has had a hormone-sensitive cancer, the right step is a conversation with the treating team, not a purchase. The Vapofil bottle is made and sold for men, but this caution is written about the herb, and the herb is in the capsule.
The bottle's own caution block adds that people with a known medical condition should consult a physician. Our who it is for page lists the other groups who should ask first.
Does Vapofil raise testosterone?
No such claim is on the label, and this site will not make one. The front of the bottle reads Vapofil, Premium Formula, 60 Capsules and Dietary Supplement, with no claim at all. The marketing lines supplied with the product talk about desire, circulation, stamina and confidence. None of them uses the word testosterone.
Look at the rest of the panel and the picture does not change. The NIH fact sheet on boron records no specific testosterone finding. Tongkat ali, which is often marketed for testosterone, has no monograph at the NIH Office of Dietary Supplements, at NCCIH or at Memorial Sloan Kettering. That is an absence of information, not a verdict.
Vapofil is also not a treatment for low testosterone. If you think your levels are low, the way to find out is a medical check, not a capsule. A doctor can look at the symptoms, order the right tests and rule out other causes.
What should you do if hormones are the real worry?
Tiredness, low desire and weaker erections are common, and they have many causes. Heart disease, diabetes, depression, thyroid problems, poor sleep, alcohol and the side effects of some prescriptions all belong on the list. A supplement cannot sort these out for you.
- If the change has lasted more than a few months, book a visit instead of a second bottle.
- Write down your sleep, alcohol and stress, and any recent change in medicine.
- Bring the Supplement Facts panel if you are thinking of trying a product alongside your care.
- Ask what tests, if any, make sense for you. This site cannot say.
If you still want to try one bottle, our 30-day test post shows how to keep notes so the month tells you something.
What do the label, price and guarantee say?
| Item | What is published |
|---|---|
| Wild yam root extract | 20 mg per serving |
| Serving | 2 capsules daily with an 8 oz. glass of water; 30 servings per bottle |
| Total actives | 118 mg per serving |
| Claim on the front of the bottle | None |
| Price | Not published on this site; the live figure is at checkout |
| Guarantee | 60 days from purchase, unless the sales page prints a longer window |
Vapofil is not FDA approved, and no supplement is. The FDA statement on the bottle says the claims have not been evaluated and that the product is not intended to diagnose, treat, cure or prevent any disease.
Which sources does this post use?
Every outside fact below comes from a source named on this site. Nothing else is cited.
- Memorial Sloan Kettering Cancer Center (2026). Wild Yam - About Herbs. https://www.mskcc.org/cancer-care/integrative-medicine/herbs/wild-yam
- NIH Office of Dietary Supplements (2026). Boron - Health Professional Fact Sheet. https://ods.od.nih.gov/factsheets/Boron-HealthProfessional/
- National Center for Complementary and Integrative Health (2026). Dietary Supplements Marketed for Weight Loss, Bodybuilding, and Sexual Enhancement: What the Science Says. https://www.nccih.nih.gov/health/providers/digest/dietary-supplements-marketed-for-weight-loss-bodybuilding-and-sexual-enhancement-science
- U.S. Food and Drug Administration (2026). Questions and Answers on Dietary Supplements. https://www.fda.gov/food/information-consumers-using-dietary-supplements/questions-and-answers-dietary-supplements
Frequently asked questions
Does wild yam raise testosterone?
No source this site uses shows that. Memorial Sloan Kettering says there is no evidence the human body can convert diosgenin into progesterone.
What is diosgenin?
A compound in wild yam that can be turned into steroid hormones in a laboratory. The sources do not show the body doing the same.
Is wild yam good for fertility?
Nothing about fertility is published in the sources this site uses, so this site makes no claim.
How much wild yam is in Vapofil?
20 mg of wild yam root extract per two-capsule serving. The standardisation is not published.
Are there cautions with wild yam?
Memorial Sloan Kettering notes estrogenic effects. People with hormone-sensitive cancers should talk to their physicians first.
Is Vapofil a testosterone booster?
The label makes no such claim, and Vapofil is not a treatment for low testosterone. See a doctor if you are worried about your levels.
Our view
Wild yam is a good example of a story that feels like science. A compound that can be turned into a hormone in a lab becomes a root that raises hormones in a man. Memorial Sloan Kettering cuts the link with one plain sentence.
That leaves wild yam on the Vapofil panel as a small row, 20 mg, with no published reason for being there that a source supports. The sources do not make it a testosterone ingredient, and the one caution they give is about hormone-sensitive cancers.
Vapofil is not FDA approved, and no dietary supplement is. This post is general information, not medical advice. Take medical questions to your doctor or pharmacist.
Last updated October 29, 2026. Medically reviewed by Dr. Lindsey Wells, ND, Naturopathic physician, on October 16, 2026.