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Amazon.com: Vitamatic Vitamin D3 50,000 IU (as Cholecalciferol), Once Weekly Dose, 1250 mcg, 60 Veggie Capsules 1 Year Supply, Progressive Formula Helping Vitamin D Deficiencies (60 Count (Pack of 1)) : Health & Household
Amazon.com: Nature Made Extra Strength Vitamin D3 5000 IU (125 mcg), Dietary Supplement for Bone, Teeth, Muscle and Immune Health Support, 180 Softgels, 180 Day Supply : Health & Household
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Vitamin D3 25 mcg (1000 IU) Softgels | For Healthy Bones | Nature Made®
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HealthMatch - 42% Of Americans Are Deficient In Vitamin D. Are You At Risk? If So, What Can You Do About It?
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Which foods are high in vitamin D? - BHF
Nutrients | Free Full-Text | Immunologic Effects of Vitamin D on Human Health and Disease
The power of vitamin D: What experts already know (and are still learning) about the 'sunshine vitamin' - UTHealth Houston
Can Vitamin D Lower the Risk of Respiratory Infections?
A Daily Dose of Vitamin D Is More Powerful Than You Think. Here's What to Know - CNET
Everything You Need to Know About Vitamin D — Beata Lewis MD
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