L-Citrulline, Zinc & B3: What Research Says
Maxorin's own marketing page doesn't name a single ingredient — it tells buyers to check the Supplement Facts panel on their physical bottle. That's a real transparency gap. In its place, we looked at independent, third-party coverage of this exact product, which consistently points to three ingredients: L-Citrulline, Zinc and Vitamin B3 (Niacin). Here's what general research says about each, with the caveat that none of this confirms Maxorin's own specific formula or dosing.
L-Citrulline
L-Citrulline is an amino acid the body converts into L-arginine, a precursor to nitric oxide — a molecule involved in relaxing blood vessels and supporting healthy circulation. It's one of the more frequently studied ingredients in the broader male-vitality supplement category, generally at gram-level doses in clinical research. We don't know what dose, if any, Maxorin actually uses.
Zinc
Zinc is an essential trace mineral involved in dozens of bodily processes, including normal testosterone metabolism and immune function. Zinc deficiency has been linked in research to lower testosterone levels, though supplementing beyond a normal, sufficient level hasn't been shown to provide additional benefit in someone who isn't deficient.
Vitamin B3 (Niacin)
Niacin plays a role in how your body converts food into usable energy at the cellular level. Separately, niacin has a decades-long history of use — at much higher, medically supervised doses than typical supplement servings — for cholesterol and circulatory support, which is likely why it shows up in performance-oriented formulas generally.
The honest bottom line
All three ingredients have a real, researchable basis for inclusion in a formula like this. What we can't tell you — because neither Maxorin nor the third-party sources we checked disclose it — is how much of each ingredient is actually in a Maxorin capsule, or whether the amounts used reach levels shown to matter in the research above.