Zinc
Also known as Zinc picolinate, Zinc gluconate
Zinc is essential for immune cell function, wound healing, protein synthesis, and hormone production. It is one of the most popular minerals for shortening colds, but long-term high doses must be balanced with copper.
Benefits
Shortens colds
ModerateZinc lozenges taken early may reduce the duration of common-cold symptoms.
Supports skin and wound healing
ModerateUsed for acne and tissue repair due to its role in cell turnover.
Hormone and immune support
PreliminaryRequired for testosterone production and healthy immune signaling.
Pros & cons
Pros
- Effective for early cold symptoms
- Inexpensive
- Multiple absorbable forms
Cons
- Narrow safe long-term range
- Must balance with copper
Side effects
Nausea on empty stomach
Can cause stomach upset if taken without food.
Copper depletion
Chronic high doses lower copper, which can cause anemia and neurological issues.
How to take it
Typical dose
8–15 mg per day for maintenance; higher short-term for colds
Timing
With food to avoid nausea
Common forms
Tip: Avoid exceeding 40 mg/day long-term without added copper.
What the research says
Zinc and the common cold
ModerateLozenges started within 24 hours of symptoms may shorten cold duration, though dose and form matter.
Zinc and copper balance
StrongSustained high-dose zinc induces copper deficiency, supporting combined supplementation.
How it connects
Relationships between Zinc and other supplements in the matrix.
Long-term high-dose zinc depletes copper — supplement copper (≈1 mg per 10–15 mg zinc) if using chronically.
Compare the pairing