Natural Viagra: what the evidence says

There is no natural Viagra. No food, drink or supplement has matched sildenafil, the drug in Viagra, in a clinical trial, and the FDA warns that many products sold as natural male enhancement contain hidden sildenafil or tadalafil. A few supplements showed small effects in short trials of men with mild ED, and losing weight with more exercise restored normal erections for about a third of obese men in a 2-year study.

This guide covers what the FDA has found in “natural” ED products, what each popular supplement and food did when tested, the baking soda claim, and the legal way to get a pill that works.

Why the FDA warns about natural Viagra products

The FDA says products that claim to treat sexual dysfunction, including male enhancement supplements, energy pills and stamina pills, are “likely to be contaminated with dangerous hidden ingredients.” They are often sold as dietary supplements, foods or all-natural treatments, carry many positive reviews and are sold online and in stores. Its list of sexual enhancement and energy product notifications held 441 notices from 2012 to Oct 15, 2026, 31 of them dated 2026, and the FDA says the list covers only a small fraction of contaminated products.

Three examples from the FDA’s own notices:

• Herb Viagra Male Sexual Stimulant (Nov 24, 2020): found during an import exam, and FDA lab analysis confirmed it contained sildenafil.
• MAXMAN Coffee (Sept 2, 2026): sold for sexual enhancement, it contained sildenafil and tadalafil not listed on the label.
• Miracle Power of King Kong Honey (Sept 25, 2026): contained tadalafil not listed on the label.

The danger is not only that the dose is unknown. Hidden sildenafil or tadalafil can interact with nitrates such as nitroglycerin and drop blood pressure to dangerous levels, and the FDA notes that people with diabetes, high blood pressure, high cholesterol or heart disease often take nitrates. Dietary supplements are not approved by the FDA before they are sold, according to the National Center for Complementary and Integrative Health (NCCIH).

What the supplement trials measured

L-arginine. A 2019 meta-analysis pooled 10 randomized trials in men with mild to moderate ED. Men taking 1,500 to 5,000 mg a day, alone or with other ingredients, were more likely to report improvement than men on placebo or no treatment, and scored higher on several erectile function questions. Doses and durations varied a lot between trials, and side effects were more common on arginine.

L-citrulline. The body turns L-citrulline into L-arginine. In a single small Italian study, 24 men with mild ED took a placebo for a month and then 1.5 g of L-citrulline a day for a month. Twelve of them (50%) moved from a mildly impaired to a normal erection hardness score on citrulline, against 2 (8.3%) on placebo. The authors wrote that it was less effective than PDE5 inhibitors such as sildenafil.

Ginseng. The 2021 Cochrane review found that ginseng’s effect on the standard erectile function score was 3.5 points on a 30-point scale, below the 4-point minimum the reviewers counted as a meaningful change, on low-certainty evidence. Men on ginseng were more likely to say they could have intercourse. No trial compared it with an approved ED drug.

Yohimbe. NCCIH says there is not enough research to say whether yohimbe supplements help ED, that products often don’t say how much yohimbine they contain, and that it is illegal to market an over-the-counter yohimbine product as an ED treatment without FDA approval.

Natural Viagra foods

No food has been shown to treat ED. What the research does say:

• Watermelon is a dietary source of L-citrulline and L-arginine, but we found no published trial testing watermelon itself for ED (PubMed search, Oct 27, 2026).
• Fruit and flavonoids. In a study that followed 25,096 men for 10 years, those who ate the most fruit had a 14% lower risk of developing ED, and higher intake of some flavonoids, plant compounds found in fruit, was linked to a 9% to 11% lower risk. This is an observational association, not proof that fruit prevents ED.
• Pomegranate juice. In a 4-week crossover trial with 53 men with mild to moderate ED, 25 of the 42 men who improved did so while drinking pomegranate juice rather than placebo. The difference was not statistically significant.

What is the best natural drink for erectile dysfunction?

No drink has been shown to work. Pomegranate juice was tested against placebo in a small ED trial, and its result fell short of significance. Drinks and foods sold for sexual performance carry extra risk: MAXMAN Coffee contained two prescription ED drugs, and 17 honey products appear on the FDA’s sexual enhancement warning list. Plain water, juice or coffee bought as food is a different thing from a product marketed to give you an erection.

Baking soda and erectile dysfunction

The idea that baking soda treats ED has no evidence behind it. A PubMed search on Oct 27, 2026 for baking soda or sodium bicarbonate with erectile dysfunction returned two papers, and neither tested it as an ED treatment taken by mouth: one, from 1993, added sodium bicarbonate to drugs injected into the penis to reduce pain, and the other was about a different supplement.

Baking soda is an over-the-counter antacid, and its Drug Facts label sets firm limits. Arm and Hammer’s label says to dissolve half a teaspoon in half a glass of water, no more than every 2 hours, and to take no more than seven half teaspoons in 24 hours, or three if you are over 60. Each half teaspoon contains 656 mg of sodium. The label tells people on a sodium-restricted diet to ask a doctor first, warns not to take it when overly full, and says not to use the maximum dose for more than 2 weeks.

Lifestyle changes with trial evidence

The strongest non-drug evidence is for weight loss and exercise. In a 2-year Italian trial, 110 obese men aged 35 to 55 with ED were split into two groups. The 55 men given detailed advice to lose 10% or more of their weight and move more raised their exercise from 48 to 195 minutes a week, and their average erectile function score rose from 13.9 to 17, while the control group’s stayed level. Seventeen of them reached a normal score, against 3 of 55 men in the control group. Changes in weight, physical activity and C-reactive protein, a marker of inflammation, each tracked with the improvement.

What works like Viagra: the approved pills

Four pills are FDA-approved for ED: sildenafil, tadalafil, vardenafil and avanafil. In sildenafil’s trials of 1,797 men, 63% to 82% reported improved erections, depending on dose, against 24% on placebo. They need a prescription, and a licensed clinician can write one after an online review; see whether you can buy Viagra over the counter.

As of October 2026, generic sildenafil cost from $1.60 a 25 mg dose at Strut Health, and MyDrHank’s sildenafil plans started at $25 a month (it doesn’t state the strength or tablet count, or say clearly whether its tablets are FDA-approved generics or compounded). Never take an ED pill with nitrates or riociguat. Compare clinics in our sildenafil rankings and ED provider rankings, or read about sildenafil.

The bottom line

Natural Viagra doesn’t exist, and products sold that way keep turning up on the FDA’s hidden-drug warning list. L-arginine, L-citrulline and ginseng showed small effects in short trials of men with mild ED, no food or drink has been shown to treat it, and baking soda has no evidence at all. Losing weight and exercising helped a third of obese men in a 2-year trial. For a treatment that works reliably, an FDA-approved pill costs a few dollars a dose with a prescription. More on the ED hub.