Vitamin D for Allergies
Evidence-Based Natural Remedy Guide
Effectiveness
Type
supplement
Sources
1 cited
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How Vitamin D Helps with Allergies
Vitamin D modulates the immune system, shifting it away from the overactive Th2 response that drives allergic reactions. Deficiency is associated with increased allergy severity.
🔬 What the Research Says
A 2017 BMJ meta-analysis found vitamin D supplementation reduced respiratory issues, and emerging research links adequate vitamin D levels to reduced allergy severity and asthma risk.
[1] Vitamin D and respiratory tract infections/immune modulation — BMJ (2017)
📋 How to Use
Take vitamin D3 supplement daily with food containing fat. Get blood levels checked - optimal range is 40-60 ng/mL.
💊 Recommended Dosage
2000-4000 IU vitamin D3 daily, adjusted based on blood levels.
⚠️ Side Effects & Cautions
Safe at recommended doses. Excessive supplementation over 10,000 IU daily may cause toxicity.
🛒 Where to Buy Vitamin D
NatureWise Vitamin D3 5000 IU
★★★★★ 4.8 · $10-15
Other Natural Remedies for Allergies
Other Conditions Vitamin D Helps
📚 Sources
Last reviewed: February 2026 · Medical disclaimer applies
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