Zinc Picolinate 30mg NSF Sport by Thorne

If your diet is low in animal protein or high in phytic acid (grains/legumes), zinc picolinate can fill a real gap. Athletes who sweat heavily, vegans, those with chronic gut issues, and people after bariatric surgery are common low-zinc groups. If your Zinc, Serum or Plasma Zinc is low or low-normal, 30 mg is a practical repletion dose; once levels normalize, most step down to a lower maintenance dose. NSF Certified for Sport makes it a safe pick for drug‑tested athletes.

Picolinate is a chelated form that tends to absorb well compared with oxide or sulfate. Zinc is required for hundreds of enzymes that handle DNA repair, insulin signaling, and antioxidant defenses like superoxide dismutase (an enzyme that neutralizes reactive oxygen). For immunity, it helps mature T cells and NK cells (the white blood cells that find and clear infected cells). Zinc deficiency can lower testosterone; fixing a deficiency restores it, but extra zinc won’t raise levels if you’re already sufficient.

Take one capsule daily with food to prevent nausea. Separate from iron, calcium, or magnesium supplements by 2–3 hours to improve absorption. Morning or evening is fine, but avoid taking it with high-dose fiber or phytate-heavy meals if you’re repleting. This is a repletion-level dose for most adults; after 8–12 weeks, recheck Zinc, Serum and consider dropping to a smaller maintenance dose if you’re in range.

Zinc binds certain antibiotics and blocks their absorption. Separate at least 4–6 hours from tetracyclines (like doxycycline) and fluoroquinolones (like ciprofloxacin). It also reduces absorption of penicillamine (used for rheumatoid arthritis and Wilson disease), so don’t combine without clinician guidance. Long-term high-dose zinc can lower Copper, Serum and cause anemia or neuropathy, so pair with monitoring or a low-dose copper if using beyond a few months.

Pause or reduce if you develop metallic taste, nausea, or new anemia—these can signal excess or copper depletion. If you already have low Copper, Serum, iron-deficiency anemia without a cause, or are pregnant and not zinc-deficient, 30 mg daily may be more than you need. For acute colds, capsules are not a substitute for zinc lozenges used at symptom onset; the evidence for prevention in well-nourished adults is limited.