What is the recommended dosage for Zinc?

General: 8-11 mg/day (RDA); Post Bariatric: 16-22 mg/day; Metabolic Support: 15-30 mg/day

What are the side effects of Zinc?

Potential side effects include: Nausea, Vomiting (on empty stomach), Copper depletion (long-term high dose), Metallic taste.

What is zinc and how may it relate to weight management?

Zinc is an essential trace mineral involved in immune function, protein synthesis, and hormone regulation, including insulin and leptin. Some research suggests that zinc supplementation may help improve insulin sensitivity and leptin signaling in individuals with zinc deficiency, which may indirectly support metabolic health.

What dosage of zinc has been studied for metabolic outcomes?

Clinical trials on metabolic parameters have used 20–50 mg of elemental zinc per day, typically as zinc gluconate, zinc sulfate, or zinc picolinate. The RDA is 8–11 mg for adults. The tolerable upper intake level is 40 mg per day for adults. Study durations ranged from 4 to 12 weeks.

What are the potential side effects of zinc supplements?

Common side effects include nausea, vomiting, and metallic taste, especially on an empty stomach. Long-term zinc supplementation above 40 mg daily can cause copper deficiency, leading to anemia and neurological problems. Zinc may reduce absorption of antibiotics and penicillamine if taken simultaneously.

Zinc

vitamin_mineral

Also known as: Zinc Picolinate, Zinc Gluconate, Zinc Citrate, Zinc Acetate, Zinc Monomethionine

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About

An essential trace mineral required for leptin synthesis, insulin processing, and thyroid hormone production. Meta-analyses of 27 RCTs demonstrate zinc supplementation may support healthy body weight and insulin sensitivity, with effects most pronounced in deficient and obese individuals.

How It Works

Essential trace mineral required for leptin synthesis, insulin processing and secretion, thyroid hormone production (zinc-dependent deiodinase enzymes), and taste/smell acuity (zinc-dependent gustin protein). Zinc deficiency impairs appetite regulation, reduces metabolic rate through hypothyroidism, and promotes insulin resistance. Zinc also modulates adipokine secretion from adipose tissue.

Evidence For Conditions

Condition	Grade	Studies	Participants
Insulin Resistance	B	27	1652	View →

Side Effects

Nausea
Vomiting (on empty stomach)
Copper depletion (long-term high dose)
Metallic taste

Drug & Supplement Interactions

Antibiotics (reduced absorption — take 2 hours apart)
Penicillamine (reduced absorption)
Iron supplements (competitive absorption)
Calcium supplements (competitive absorption)

Always inform your healthcare provider about all supplements you take.

Related Ingredients

B-Complex Iron Magnesium Omega-3 Vitamin B12

Quick Facts

Dosage: General: 8-11 mg/day (RDA); Post_Bariatric: 16-22 mg/day; Metabolic_Support: 15-30 mg/day
Forms: capsule tablet lozenge liquid
Natural Sources: Oysters, Red meat, Poultry, Beans, Nuts, Pumpkin seeds, Dark chocolate
Upper Limit: 40 mg/day (long-term); higher doses may cause copper depletion
Best Time: With meals to minimize nausea; avoid taking with iron or calcium simultaneously

Evidence Summary

Insulin Resistance B

FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. The products and information on this website are not intended to diagnose, treat, cure, or prevent any disease. The evidence grades presented are based on our analysis of published peer-reviewed research and do not constitute medical advice. Always consult your healthcare provider before starting any supplement regimen.