SupplementGraded
All Ingredients
MineralsPregnancy Safe

Zinc

Also known as: zn

Zinc is an essential trace mineral involved in immune function, protein synthesis, wound healing, and DNA synthesis. It's one of the most common deficiencies worldwide, especially in vegetarians and the elderly.

Key Benefits

  • Supports immune cell function
  • Accelerates wound healing
  • Supports testosterone production
  • May shorten cold duration
  • Essential for taste and smell

Recommended Dosage

General Use
8-11 mg daily (varies by sex)
Upper Limit
40 mg daily
ColdTreatment
75 mg zinc acetate lozenges for short-term use only

Forms & Bioavailability

Best Forms

  • Zinc picolinate
  • Zinc glycinate
  • Zinc acetate (for colds)

Forms to Avoid

  • Zinc oxide — very poorly absorbed
  • Zinc sulfate — high GI distress

Safety Notes

  • Chronic high doses cause copper deficiency
  • Can cause nausea if taken on empty stomach
  • Competes with iron and copper for absorption
  • Long-term use above 40 mg needs copper supplementation

Drug Interactions

Consult your healthcare provider if you take any of the following:

Antibiotics (quinolones, tetracyclines)PenicillamineCopper supplementsIron supplements

Sources

  • NIH Office of Dietary Supplements
  • Cochrane Database of Systematic Reviews

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