Windmill Vitamin D3 1000 IU Bone & Immune Support Tablets 100ct
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Why You'll Love It
Bone & Joint
Supports healthy calcium absorption for strong bones and teeth.
Immune Defense
Helps maintain immune system function year-round.
Strength & Muscle
Promotes healthy muscle function and nervous system support.
Rest & Recovery
Supports a positive mood and overall well-being.
Vitamin D
Pure, concentrated D3 in convenient daily dosage.
Key Benefit
Ideal for those with limited sun exposure or dietary gaps.
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About This Product
Strengthen your foundation with Windmill's potent Vitamin D3 25 mcg (1,000 IU) — the essential nutrient your body needs every single day to support calcium absorption, bone health, and immune function.
- Supports healthy calcium absorption for strong bones and teeth
- Helps maintain immune system function year-round
- Promotes healthy muscle function and nervous system support
- Supports a positive mood and overall well-being
- Pure, concentrated D3 in convenient daily dosage
- Ideal for those with limited sun exposure or dietary gaps
Formulated by Windmill Health Products — a trusted American supplement brand for over 50 years, manufactured in an FDA-regulated, cGMP-certified facility. Each tablet delivers 25 mcg (1,000 IU) of Vitamin D3 as cholecalciferol plus 75 mg of calcium for enhanced bone support.
What's Inside
Serving size: 1 Tablet
Vitamin D3 (as cholecalciferol)
25 mcg
125% Daily Value
Calcium (as dicalcium phosphate)
75 mg
6% Daily Value
How It Works
Take Daily
Take 1 tablet daily with food as a dietary supplement or as directed by a healthcare professional.
Absorb & Nourish
Premium ingredients absorb efficiently, delivering targeted nutrition where your body needs it most.
Feel the Difference
Most people notice improvements within 2–4 weeks of consistent daily use. Real results, not hype.
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Trusted by thousands · 50+ years of quality · Made in the USA
Frequently Asked Questions
Most people notice a difference within 2-4 weeks of consistent daily use. Give Windmill Vitamin D3 1000 IU Bone & Immune Support Tablets 100ct time to build up in your system for the best experience.
Windmill Vitamin D3 1000 IU Bone & Immune Support Tablets 100ct is generally safe to combine with other supplements. If you take prescription medication, consult your healthcare provider first.
Yes. Windmill Vitamin D3 1000 IU Bone & Immune Support Tablets 100ct is sourced directly from the manufacturer and shipped through our authorized distribution partner — never gray-market sellers or third-party resellers. The bottle you receive comes from the same supply chain that stocks major retailers.
Our inventory is held in a temperature-controlled distribution facility, keeping every product within the manufacturer’s recommended environment until it leaves for your door.
We offer a 30-day satisfaction guarantee. Return any unopened product within 30 days for a full refund - no questions asked.
Store in a cool, dry place away from direct sunlight. Keep the lid tightly closed. No refrigeration required unless specified on the label.
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Windmill Vitamin D3 1000 IU Bone & Immune Support Tablets 100ct