Strengthen your immune system with proven immune-boosting supplements.
Vitamin D is not just a vitamin—it's a hormone that regulates over 200 genes, many involved in immune function. Most people are deficient.
Chemical Forms
Clinical Standard
Effective Dose
2000-5000 IU daily (test levels)
Best Timing
With fatty meal, morning preferred
Audited Products
We're currently auditing products for this ingredient.
Zinc is required for immune cell development and function. It's also antiviral and supports the thymus gland where T-cells mature.
Chemical Forms
Clinical Standard
Effective Dose
15-30mg daily
Best Timing
With food to prevent nausea
Audited Products
We're currently auditing products for this ingredient.