Jellyfil Ingredients: Which of the Nine Have Human Studies?

• One gummy holds nine ingredients in a single 82 mg blend: muira puama, maca, catuaba, green tea extract, caffeine, ashwagandha, L-arginine, tribulus and horny goat weed.
• Caffeine (5 mg) is the only one given a printed weight. The other eight are lumped together.
• L-arginine owns the best trial record, at 1.5 to 5 g a day. That is gram territory, not milligram territory.
• Alone, tribulus has not raised testosterone in human trials.
• Horny goat weed lacks human trials for sexual function, and some products have turned up adulterated.
• Nobody has tested the Jellyfil formula. Studies of single ingredients cannot prove that an 82 mg blend works.

L-arginine is an amino acid that the body turns into nitric oxide, a gas that lets blood vessels relax. That mechanism sits behind the circulation line on the sales page.

A 2019 meta-analysis combined 10 randomized trials covering 540 men with ED (Rhim et al., 2019). The men took 1.5 to 5 g daily. Against placebo, arginine improved scores in mild to moderate ED. The odds ratio of 3.37 came with a wide range, 1.29 to 8.77, a sign that the trials were small and uneven. Scores for desire stayed flat.

Mild side effects showed up more often with arginine, 8.3% against 2.3%, and none were severe. Arginine can also lower blood pressure. And the men in that review were not taking a blend of nine ingredients.

These four hold most of the folklore and little of the data.

• Muira puama: a bark from the Amazon. A professional monograph reports a lack of quality trials (Drugs.com, Muira puama, 2026).
• Catuaba: a name shared by several trees. One analysis found many catuaba products without the labeled plant, and some with unlisted drugs (WebMD, Catuaba, 2026).
• Tribulus: a review of 11 studies saw no testosterone rise in people taking it alone (Qureshi et al., 2014).
• Horny goat weed: no human trials on sexual function, plus cautions about heart rhythm (MSKCC Epimedium, 2023).

None of that makes the herbs harmful at gummy doses. It simply means the old reputation has not been matched by modern trials.

Caffeine is the single printed amount, 5 mg a gummy, which equals a few sips of tea. A 16-ounce cup of tea carries about 60 to 100 mg (MedlinePlus, Caffeine in the diet, 2025), and the FDA puts 400 mg a day as a level not generally tied to harm in healthy adults (FDA, Caffeine).

Green tea extract appears with no amount. Concentrated extracts in pills have caused rare liver problems (LiverTox, Green tea). Here the amount is at most a slice of 82 mg, well below the gram-level doses in many diet pills.

Since the panel lists caffeine and green tea extract, we will not call Jellyfil stimulant-free. A brand graphic says otherwise, and the bottle wins.

The ingredient list reads well, and better than it performs. Nine names sound like a lot, yet they share 82 mg and only one amount is printed.

Ranking the evidence, L-arginine comes first by a distance, and it is also the one needing most care around blood pressure. Maca and ashwagandha follow with small trials. The rest lean on tradition.

That sums up the formula fairly: traditional and modest. If you try it, treat it as a light daily routine, ask your doctor about medicines and do not expect a drug-like effect.

Reminder: Jellyfil is not FDA approved, and no dietary supplement is. It is not intended to diagnose, treat, cure, or prevent any disease. Anyone with a medical concern, including erection trouble, should see a doctor.