Vitamin D-5,000 - NSF Certified for Sport - 120 Servings

$39.00

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Why We Chose This

Vitamin D is foundational to bone strength, muscle function, and immune resilience—especially critical when training hard or living in climates where sunlight exposure is limited. Thorne's D-5,000 delivers highly absorbable D3 in a form trusted by athletes and verified by NSF Certified for Sport®, so you can fill the gap that diet and sunlight alone often leave behind.

Thorne Vitamin D-5,000 IU provides 120 servings of highly absorbable vitamin D3, NSF Certified for Sport, making it a trusted option for athletes and adults whose sun exposure or diet may leave their vitamin D levels short of optimal.

Thorne’s D-5,000 contains 5,000 IU of high-quality vitamin D3 and is NSF Certified for Sport®. Although it is well known that direct sunlight is a natural source of vitamin D, many individuals, especially the elderly, don’t get enough vitamin D from sunlight or from their diet. Be sure you get the vitamin D your body needs with Thorne’s easily absorbed Vitamin D-5,000.

Benefits of Thorne’s Vitamin D-5,000

Supports healthy teeth and bones*
Promotes lean muscle mass and helps maintain muscle strength*
Enhances the absorption and retention of calcium*
Supports healthy brain function*
Promotes cardiovascular health and immune function*
Formulated with vitamin D3, a more potent and better absorbed form than vitamin D2
Thorne’s vitamin D contains no lactose and no preservatives like BHT, BHA, sodium benzoate, and sorbic acid

You could be at a higher risk of a vitamin D deficiency if you

Rarely go outdoors, live in the northern latitudes, or have a darker skin tone
Have limited sun exposure due to your occupation, clothing choices, or engage in indoor athletics rather than outdoor sports
Regularly wear sunscreen with an SPF greater than 8
Are an older adult (the risk of a deficiency increases with age beginning at age 50)
Have a chronic health condition, such as a bowel disease or a surgical procedure (like gastric bypass) that decreases fat absorption
Are obese

The optimal amount of vitamin D for an individual depends on many factors and varies from person to person. Therefore, the requirement for vitamin D supplementation should be individualized. Either of Thorne’s D-1,000 or D-5,000 can be an ideal way to maintain an optimal level of vitamin D in healthy individuals.*

Because athletes need to know their supplements are trustworthy and compliant, every batch of an NSF Certified for Sport® product is tested for compliance with label claims and to ensure the absence of nearly 300 substances banned by many major athletic organizations.

Suggested Use:

Take 1 capsule daily or as recommended by your health-care practitioner.

Warnings:

ALLERGY WARNING

This product is contraindicated in an individual with a history of hypersensitivity to any of its ingredients.

PREGNANCY

If pregnant, consult your health-care practitioner before using this product.

INTERACTIONS

There are no known adverse interactions or contraindications at publication date.

Who Thorne Vitamin D-5,000 Is Designed For

Indoor and northern-latitude athletes: Those who train indoors or live in low-sunlight regions can use this as part of a routine to help maintain vitamin D levels that support lean muscle mass and strength.
Bone and calcium support seekers: The D3 formula is designed to enhance the absorption and retention of calcium, making it a practical addition to a bone-health routine for both younger athletes and older adults.
Immune and cardiovascular wellness: Vitamin D3 at this potency is commonly used by those looking to support immune function and cardiovascular health as part of a broader daily supplement protocol.
Tested, sport-safe supplement users: NSF Certified for Sport verification means the product is independently tested for banned substances, giving competitive athletes confidence in what they are taking.

Frequently Asked Questions

What makes Thorne Vitamin D-5,000 different from other vitamin D supplements?

Thorne uses vitamin D3, which is generally considered more potent and better absorbed than vitamin D2. The formula also contains no lactose and no preservatives such as BHT, BHA, sodium benzoate, or sorbic acid.

Is Thorne Vitamin D-5,000 safe for competitive athletes to take?

Yes. Thorne Vitamin D-5,000 is NSF Certified for Sport, meaning it has been independently tested and certified to be free of substances banned in sport.