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Best Supplements for Immunity

Essential vitamins and nutrients that support immune cell function, reduce infection risk, and help your body fight off illness year-round.

A strong immune system is your first line of defense. These supplements address common nutritional gaps that weaken immune function.

The Vitamin D Connection

Up to 42% of Americans are vitamin D deficient. Since vitamin D3 is essential for activating T-cells and other immune defenders, correcting this deficiency is the single highest-impact step for immune health.

An Immune-Support Protocol

Take vitamin D3 (3,000 IU) with vitamin K2 (100mcg) at breakfast with fat. Add omega-3 at lunch or dinner for its anti-inflammatory and immune-modulating effects.

Top Supplements for Strengthen Your Immune System

NAC (N-Acetyl Cysteine)

Master antioxidant precursor and immune defender

💊 600–1,200 mg daily⏰ On an empty stomach or between meals

Probiotics

Supports gut microbiome and immune defense

💊 10–50 billion CFU multi-strain⏰ Morning on an empty stomach or with light meal

Vitamin C

Essential antioxidant and immune system fuel

💊 500–1,000 mg daily⏰ Split doses with meals for best absorption

Vitamin D3

Supports immune function, mood, and bone health

💊 1,000–5,000 IU daily⏰ Morning with a meal containing fat

Zinc

Supports immune function and testosterone production

💊 15–30 mg zinc picolinate or bisglycinate⏰ With a meal to avoid nausea

Frequently Asked Questions

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Take our quick quiz to get a personalized supplement recommendation.

Related Stacks

Immunity Shield

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