Ingredient profile
Wild Yam in Vapofil: 20 mg of a Root the Body Cannot Turn Into Hormones
Vapofil prints 20 mg of wild yam root extract per two capsules, with no species named. Wild yam contains diosgenin, which chemists can turn into steroid hormones in a lab. Memorial Sloan Kettering and RxList both say the human body cannot make that change (MSK: Wild yam) (RxList: Wild yam). So wild yam does not supply testosterone, DHEA or progesterone, at 20 mg or any dose.
Written by the Vapofil editorial teamUpdated
The basics
What is wild yam, and how much is in Vapofil?
Wild yam is a climbing vine in the Dioscorea family. It is not the sweet potato sold as "yam" in U.S. stores. Vapofil lists "Wild Yam Root Extract" at 20 mg per two-capsule serving.
It is the second line on the Supplement Facts panel. Wild yam, saw palmetto, sarsaparilla and nettle leaf each come in at 20 mg. All seven ingredients add up to 118 mg.
The root has a long history in women's products, mostly creams for menopause. Its place in a men's formula rests on one compound, diosgenin, and on a widely repeated idea about hormones. That idea is the main thing to check.
The chemistry
What is diosgenin, and why is it linked to hormones?
Diosgenin is a plant compound with a steroid-like shape. MSK explains that chemists can convert it into steroid compounds in the laboratory (MSK: Wild yam). That fact is real, and it is where the myth begins.
In the plant
The wild yam root makes diosgenin. It is a plant chemical, not a human hormone.
In a factory lab
Chemists use several reaction steps to turn diosgenin into steroid compounds such as progesterone or DHEA (MSK: Wild yam) (RxList: Wild yam).
In your body
The missing step. Human enzymes cannot carry out that lab chemistry, so eating or swallowing diosgenin gives no hormone (RxList: Wild yam).
Think of it like crude oil and plastic. Oil is a starting material for plastic, but drinking oil would not give you a plastic bottle. The factory is the step that matters.
The evidence
Does the body turn wild yam into testosterone or DHEA?
No. RxList states plainly that taking wild yam extract "will not increase DHEA levels in people", because the conversion happens only in the laboratory (RxList: Wild yam).
Memorial Sloan Kettering agrees. It says there is no evidence that the human body converts diosgenin to progesterone (MSK: Wild yam). RxList adds that a wild yam cream did not change progesterone levels (RxList: Wild yam).
The NIH Office of Dietary Supplements reviewed DHEA itself at 100 to 150 mg a day for 8 to 12 weeks in men. It found no significant gain in testosterone, strength or lean mass (ODS: Exercise & performance supplements). Wild yam cannot even make DHEA in the body.
So the hormone story fails twice. The body does not make the hormone, and the hormone it would make does not do the job claimed. For how all seven ingredients fit together, see how Vapofil is meant to work.
Claims checked
What can wild yam do, according to the research?
Very little that has been shown. RxList rates wild yam "possibly ineffective" for hot flashes and finds too little evidence for sexual desire or energy (RxList: Wild yam).
| Claim | What the sources say | Verdict |
|---|---|---|
| A natural source of hormones | Conversion happens only in a lab (MSK: Wild yam) | Not supported |
| Raises DHEA | "Will not increase DHEA levels in people" (RxList: Wild yam) | Not supported |
| Raises progesterone | A wild yam cream had no effect (RxList: Wild yam) | Not supported |
| Eases hot flashes | Possibly ineffective; a topical trial failed (MSK: Wild yam) (RxList: Wild yam) | Not supported |
| Sexual desire or energy | Insufficient evidence (RxList: Wild yam) | Unknown |
| Men's erections | Not published | No data |
Nothing in the table depends on dose. These are questions of whether the plant does the job at all, not whether 20 mg is enough.
Reading the label
Which wild yam species does Vapofil use?
The label does not say. It prints only "Wild Yam Root Extract", with no Latin name, no extract ratio and no diosgenin content.
That gap matters a little. Dioscorea is a large plant family, and studies name a species when they report results. MSK's animal data, for example, come from Dioscorea villosa, one of the species most often sold as wild yam (MSK: Wild yam).
A buyer cannot tell which species is inside or how much diosgenin it holds. You can ask the distributor named on the label, GEX Corp, at +1 323-372-9581.
Other entries are more specific. Horny goat weed, for example, is printed with its species, Epimedium sagittatum.
Safety
What are the side effects of wild yam, and who should avoid it?
Large amounts can cause vomiting, according to RxList (RxList: Wild yam). At 20 mg, stomach trouble is unlikely. The main questions are about hormones and medicines.
- MSK says wild yam has estrogen-like effects, so people with hormone-sensitive cancers should talk to their physician first (MSK: Wild yam).
- RxList lists a moderate interaction with estrogen (estradiol) (RxList: Wild yam).
- RxList advises avoiding it with hormone-sensitive conditions and with protein S deficiency, a clotting disorder (RxList: Wild yam).
- In animals, Dioscorea villosa was linked to chronic kidney injury. MSK reports this as animal data only (MSK: Wild yam).
Ask your oncologist or urologist before taking any product with wild yam. Hormone-sensitive conditions are the main reason MSK and RxList urge caution.
Reported effects of every Vapofil ingredient are collected on the Vapofil side effects page.
Context
Why is wild yam in a men's formula at all?
Most likely because of the diosgenin story, which sounds like a hormone link. The research does not back it, and the Vapofil bottle makes no hormone claim.
Wild yam fits a wider pattern. A 2020 review of 50 "testosterone booster" products found that most of their ingredients had no data showing a testosterone rise (Clemesha 2020: T-booster claims). Sarsaparilla, also in Vapofil, rests on a similar plant-steroid myth.
If low desire or erection trouble is the reason you are looking, a doctor visit comes first. Erection problems can be an early sign of heart disease, diabetes or high blood pressure (NIDDK: ED symptoms & causes).
Our view
Does the wild yam in Vapofil do anything for men?
We found no evidence that it does. The hormone link breaks at the step that happens inside the body, and no study tested wild yam for men's sexual health.
Pros
- Amount printed: 20 mg
- Small amount, so side effects are unlikely
Cons
- Body does not turn diosgenin into hormones
- Species and extract strength not stated
- Estrogen-like effects; hormone-sensitive caution
- No men's health trial of any kind
| Label name | Wild Yam Root Extract |
|---|---|
| What it is | Dioscorea root (species not stated) · Root extract |
| Position on the label | Printed with its own amount |
| Amount per serving (2 capsules) | 20 mg, printed |
| Amount used in research | No useful dose; the body does not turn it into hormones |
| Strength of evidence | No hormone effect in people |
| Why it is used | Root with diosgenin, a lab starting material for steroids |
| Main caution | Estrogen-like effects: ask first with hormone-sensitive conditions. |
FAQ
Wild yam in Vapofil: common questions
Do wild yam supplements work for men?
Not for hormones. Wild yam contains diosgenin, which can be turned into steroids only in a lab. MSK and RxList both say the human body cannot make that change (MSK: Wild yam) (RxList: Wild yam). No study shows wild yam raising testosterone in men at any dose.
Can your body convert diosgenin into DHEA?
No. RxList says the conversion of diosgenin to DHEA happens in the laboratory, not the body, and that wild yam extract "will not increase DHEA levels in people" (RxList: Wild yam). MSK reports the same for progesterone (MSK: Wild yam).
Is wild yam safe for men to take?
At small amounts, side effects are uncommon; large amounts can cause vomiting (RxList: Wild yam). MSK notes estrogen-like effects, so men with hormone-sensitive conditions, including prostate cancer, should ask their doctor first (MSK: Wild yam).
What species of wild yam is in Vapofil?
The label does not name one. It prints only "Wild Yam Root Extract" at 20 mg, with no Latin name, ratio or diosgenin content. Dioscorea villosa is a common wild yam species, but we cannot confirm which one Vapofil uses.
Is wild yam the same as a sweet potato?
No. Wild yam is a Dioscorea vine root. The orange "yams" in most U.S. grocery stores are usually sweet potatoes, a different plant. Eating either one does not give the body hormones.
Does wild yam work like DHEA?
No. DHEA is a hormone; wild yam is a plant that contains diosgenin, a lab starting material for DHEA (RxList: Wild yam). Even DHEA pills at 100 to 150 mg a day did not raise testosterone in men, per the NIH (ODS: Exercise & performance supplements).
Who wrote this
Written and reviewed by
Plain-language pages built from the bottle label, the order page and linked public health sources such as NIH, FDA and CDC.
Last updated . Read our editorial standards and how we check reviews. This website is run by a licensed U.S. retail desk for Vapofil, not by the manufacturer. We earn money when you buy through our order links.
Keep reading
More about Vapofil
Sarsaparilla
No plant contains testosterone. Sarsaparilla's steroid story is a myth, and it carries lithium and digoxin cautions.
Read moreIngredients
Seven Vapofil label amounts, 118 mg in all, measured against trial doses and typical products, one ingredient at a time.
Read more
How it works
Seven printed doses next to the research: what each Vapofil ingredient was studied for, and what two capsules hold.
Read moreLicensed U.S. retail desk for Vapofil
Ready to try Vapofil?
Pick a pack. Two capsules a day; one bottle lasts 30 days.
- Secure checkout
- 60-day money-back window
- Free U.S. shipping on 3+ bottles
