Description
Vitamin D is unusual among vitamins because the body can make its own with enough sun exposure, which is exactly why so many people run low, especially in northern climates or during the darker months. Thorne’s D-5,000 capsules use the D3 form, which research shows is more effective at raising and maintaining vitamin D levels than D2.
Vitamin D’s best-known role is helping the body absorb calcium, which supports bone and teeth strength.* It also supports a healthy immune system and plays a role in normal muscle function.* Because this product carries NSF Certification for Sport®, every batch is tested to confirm there are no undeclared stimulants, steroids, or banned substances, which matters for competing athletes and anyone who wants extra assurance about what’s in the capsule.
- 5,000 IU of vitamin D3 per capsule
- NSF Certified for Sport®
- Supports calcium absorption and bone health*
- Supports a healthy immune system and normal muscle function*
Vitamin D status is easy to check with a simple blood test, and levels vary widely from person to person, so testing is a better guide than guessing. Talk with your provider about an appropriate dose if you take calcium, have kidney concerns, or are already supplementing with vitamin D from another source.
Key ingredients: Per 1 Capsule: Vitamin D (as Vitamin D3) (5,000 IU).
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.




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