SnakeOilCheck earns commissions from qualifying purchases made through affiliate links. Our editorial content and meta-analyses are produced independently.

Supplements for Immune-Support

Probiotics

✓ Works

Strong evidence for IBS symptoms across 72+ RCTs. Proven for AAD and C. difficile prevention. Cochrane-backed for …

Vitamin D

? Maybe

Strong evidence for immune function, respiratory infections, and fall prevention at 800-1000 IU daily. Daily dosing may …

Zinc

✓ Works

Strong evidence for immune function and shortening colds. Moderate evidence for acne, especially topical. No real …

Get notified when we add new supplement reviews