Supplement / Vitamins

Zinc (Bisglycinate)

Essential mineral for testosterone synthesis, immune function, and protein synthesis. Bisglycinate form has superior absorption. Commonly depleted by exercise, sweating, and low animal protein diets.

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Educational reference only. This page does not diagnose, prescribe, or replace care from a licensed professional. Laws, availability, and clinical appropriateness vary by location.

Reference dose15–30 mg elemental zinc daily with food

Half-life24 hours

Risk flaglow

Regulatory noteReview required

Side effects and watch-outs

Nausea (take with food)
Copper depletion with long-term high-dose use (>40 mg/day) — supplement 1–2 mg copper
GI upset
Metallic taste at high doses
⚠️ Avoid exceeding 40 mg/day long-term — chronic copper deficiency at higher doses