Safety
Vapofil Side Effects: Two Interaction Flags and Gelatin Notes
Vapofil carries the standard caution block on its label, and two ingredients have interaction flags worth knowing.
Nettle is flagged with CYP450 substrate drugs, diuretics and blood pressure drugs, and epimedium with heart conditions, CYP3A4 substrates and aromatase inhibitors. The capsule shell is gelatin.
To check your own fit, see who should ask a clinician first.
Vapofil carries the standard caution block and no specific warnings. Two ingredients carry do-not-take flags in the published monographs: nettle with CYP450 substrate drugs and with diuretics or blood pressure medicines, and epimedium with heart disease, CYP3A4 substrates and aromatase inhibitors. Neither flag appears on the bottle. The capsule shell is gelatin.
What the label itself warns about
The caution block on this bottle is the standard US supplement caution and it is correctly worded:
“Do not exceed recommended dose. Pregnant or nursing mothers, children under the age of 18 and individuals with a known medical condition should consult a physician before using this or any dietary supplement.”
Vapofil label — caution block
Alongside it the artwork carries the three standard warning lines: “KEEP OUT OF THE REACH OF CHILDREN.” · “DO NOT USE IF SAFETY SEAL IS DAMAGED OR MISSING.” · “STORE IN A COOL, DRY PLACE.”
That is the complete safety content of this bottle. It is what almost every supplement in the United States carries, and it is the floor rather than a considered risk assessment of this particular formula. Nothing on the label names an ingredient, an interaction or a drug class.
The two interaction flags, in the monographs’ own words
Two of the seven ingredients have published do-not-take lists. Both come from Memorial Sloan Kettering’s About Herbs database, which is written for clinicians and is explicit about the strength of what it reports.
Nettle — CYP450 substrate drugs
MSK reports that animal studies suggest nettle may increase the side effects of drugs metabolised by CYP450 enzymes. That is a large family, including many common prescriptions, which is why the flag is written at the class level rather than drug by drug.
Nettle — diuretics and blood pressure medicines
MSK lists a potential additive effect. A herb with a mild diuretic tradition taken alongside a prescribed diuretic is the straightforward version of this concern.
Epimedium — heart disease
MSK advises against use in patients with heart disease, citing a patient who developed a rapid irregular heartbeat. One case report is weak evidence and it is still the only kind of evidence there is here.
Epimedium — CYP3A4 and aromatase inhibitors
MSK lists both. CYP3A4 handles a very large share of prescription drug metabolism; aromatase inhibitors are used in breast cancer treatment.
How much weight to put on these at 20 mg and 8 mg
Less than you would at a research dose, and more than zero. The honest position is that these flags were written about the ingredients rather than about this product, that the amounts here are small, and that the person able to weigh that for you is a prescriber who knows what else you take. Nothing on this bottle tells them to look.
Ingredient by ingredient
| Ingredient | Amount | What the source reports | Source |
|---|---|---|---|
| Saw palmetto | 20 mg | Well tolerated; mild digestive symptoms, dizziness, headache reported. May be unsafe in pregnancy or breastfeeding. | NCCIH |
| Wild yam | 20 mg | Oestrogenic effects; patients with hormone-sensitive cancers should talk to their physicians. | MSK |
| Sarsaparilla | 20 mg | No monograph found at NIH ODS, NCCIH or MSK. | — |
| Nettle leaf | 20 mg | Do not take with CYP450 substrates, or with diuretics or blood pressure medicines. Case reports of hypoglycaemia; gynecomastia and galactorrhoea with nettle tea. | MSK |
| Boron | about 1 mg elemental | Adult Tolerable Upper Intake Level 20 mg; this is far below it. Not an essential nutrient. | NIH ODS |
| Tongkat ali | 10 mg | No monograph found at NIH ODS, NCCIH or MSK. | — |
| Horny goat weed | 8 mg | Sweating, feeling hot, rapid irregular heartbeat and mood changes reported. Do not take with heart disease, CYP3A4 substrates or aromatase inhibitors. | MSK |
Two rows of that table say nothing, and they are the two ingredients the product leads with. An absent monograph is not a clean bill of health; it is an absence of information, and it cuts both ways.
The FDA warning that applies to this whole aisle
Nothing about Vapofil suggests it belongs in the FDA’s tainted-products database
Vapofil is not on that list, its label declares seven named botanicals with amounts, and nothing this desk has read about it points to a hidden drug ingredient. This section is about the category it is sold in, so that you know what the risk looks like — not an allegation about this bottle.
The FDA maintains a public database called Tainted Sexual Enhancement Products, built from products sold as herbal sexual enhancers and found on testing to contain undeclared prescription drug ingredients — most often sildenafil or tadalafil, or analogues of them designed to evade detection. The agency’s caveat on that page is the sentence that matters:
“This list covers only a small fraction of the contaminated products on the market. If a product is not on the list, that does not mean it is safe.”
U.S. Food and Drug Administration — Tainted Sexual Enhancement Products
The reason this is more serious than an ordinary adulteration story is the interaction. Sildenafil taken with a nitrate causes a sudden and severe fall in blood pressure. A man on a nitrate for angina who buys a herbal capsule because it is not a drug has no reason to anticipate a drug interaction, and that is exactly the situation an undeclared ingredient creates.
NCCIH covers the same ground from the evidence side: “Currently, there is no definite evidence that any herbal products are effective or safe for ED,” and separately that “many supplements promoted for ED and sexual enhancement — sometimes called ‘herbal Viagra’ — have been found to be adulterated with drug ingredients.”
- What raises the risk on a product: an effect that arrives fast and hard; a refusal to itemise the formula; no distributor name or address; no Other Ingredients line; a seller who cannot be telephoned.
- How Vapofil measures against those: it itemises all seven actives with amounts, prints its distributor’s name, street address and telephone number on the bottle itself, and carries a full Other Ingredients line.
- What to do if you take a nitrate: speak to a clinician before buying anything in this category, from any seller. That is the one piece of advice on this page that could prevent a serious event.
The gelatin question
The Other Ingredients line reads: “Microcrystalline cellulose (MCC), Gelatin, Magnesium Stearate.” The second of those three is the capsule shell, and it is the only ingredient on this product that excludes people outright.
- Not vegetarian and not vegan. Gelatin is made from animal collagen. There is no ambiguity about this.
- Source not stated. Bovine, porcine and fish gelatin are all used in capsule manufacture and the label does not say which this is.
- Which means halal and kosher status cannot be confirmed from the bottle. If that matters, the order desk is the place to ask, on +1 (302) 200-3480.
- No allergen statement is printed. That said, the Other Ingredients line being present at all is what makes this question answerable — several products this desk has covered had no such line, and could not be checked against anything.
Microcrystalline cellulose and magnesium stearate, the other two, are the two commonest excipients in the industry and neither carries a caution from any source we read.
When to stop and ask
Stop and speak to a clinician if anything unexpected happens, and particularly in these cases.
- Palpitations, a racing or irregular heartbeat, or chest discomfort. This is the epimedium flag and it is the one on this panel with a case report behind it.
- Any change in blood pressure, if you take a diuretic or a blood pressure medicine. That is the nettle flag.
- Unusual bruising or bleeding, or any change while taking a prescription medicine, particularly one you know is metabolised by the liver.
- Anything at all, if you bought something in this category from an unfamiliar seller. A supplement that produces a strong, fast, drug-like effect is a supplement worth being suspicious of, for the reasons in the FDA section above.
And a note that belongs on every page of this kind: if the symptom that brought you here has persisted for more than a few months, the useful step is a consultation rather than another bottle. It is a common presentation, it is investigable, and several of the things it can indicate are worth finding early.
- National Center for Complementary and Integrative Health (2026). Saw Palmetto.
- Memorial Sloan Kettering Cancer Center (2026). Nettle — About Herbs.
- Memorial Sloan Kettering Cancer Center (2026). Wild Yam — About Herbs.
- Memorial Sloan Kettering Cancer Center (2026). Epimedium — About Herbs.
- NIH Office of Dietary Supplements (2026). Boron — Health Professional Fact Sheet.
- National Center for Complementary and Integrative Health (2026). Dietary Supplements Marketed for Weight Loss, Bodybuilding, and Sexual Enhancement: What the Science Says.
- U.S. Food and Drug Administration (2026). Tainted Sexual Enhancement Products.
- U.S. Food and Drug Administration (2026). Questions and Answers on Dietary Supplements.
- U.S. Food and Drug Administration (2026). Dietary Supplement Labeling Guide: Chapter VI. Claims.
- U.S. Food and Drug Administration (2026). Dietary Supplement Labeling Guide: Chapter IV. Nutrition Labeling.
Read the panel first, then decide
Sixty capsules, two a day, seven actives itemised and two extract ratios printed — better label work than most of this aisle. What is missing is standardisation, and two of the seven ingredients have no monograph anywhere we looked. The live price and the 60-day return terms are both on the seller’s checkout screen.
60-day window · Questions first? Call +1 (302) 200-3480