Minerals
Zinc
Also known as: zinc sulfate, zinc chloride
A trace mineral for immune function and wound healing. Commonly added to 'immunity' drips; the IV evidence is thin.
Medically reviewed by Akash Bhagat, DO, FACEP
What the evidence supports
| Use | Evidence |
|---|---|
| Correcting zinc deficiency | Established |
| Preventing or shortening colds via IV | Unproven |
Common side effects
- Vein irritation or burning
- Nausea
- Metallic taste
Who should be cautious or avoid this
- Kidney disease
- Repeated high doses can cause copper deficiency
- Interacts with some antibiotics
What it is
Zinc is a trace mineral your immune system, skin, and many enzymes depend on.
Why it’s used in IV therapy
A frequent ingredient in “immunity” drips.
What the evidence says
Correcting deficiency matters. Research on oral zinc lozenges for colds has mixed results; there’s no meaningful evidence that IV zinc prevents or shortens illness in healthy people.
Side effects and cautions
Zinc can irritate veins. Over time, excess zinc can cause copper deficiency, so frequent high-dose use isn’t a good idea.