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Zinc

Most useful when dietary zinc is consistently low, symptoms fit, or testing and clinical context support supplementation.

Form

Zinc citrate, picolinate, gluconate, or bisglycinate

Dose

Use targeted doses when intake is low or labs and symptoms support it; avoid chronic high-dose use unless supervised.

When to take

Take with a small meal if it causes nausea. Keep high-dose zinc separate from iron or copper plans unless guided.

Last reviewed

2026-06-27

Toxicity and cautions

Long-term high-dose zinc can cause nausea and copper deficiency, which may lead to anemia or neurological symptoms.

Quality checks

Serum zinc can help but is imperfect. Interpret with diet pattern, symptoms, inflammation, and clinician advice.

Popular brands

NOW Zinc
Thorne Zinc Picolinate
Solgar Zinc
Nature's Bounty Zinc
Garden of Life Zinc

Related guide: read the full nutrition guide.

General information only

GreenFit provides general nutrition information only. It is not medical advice. For medical conditions, pregnancy, children, elderly people, eating disorders, kidney disease, diabetes, or medication-related concerns, consult a qualified doctor or registered dietitian.