Vitamin D-5,000 - NSF Certified for Sport - 60 Servings

Thorne Vitamin D-5,000 IU provides a highly absorbed vitamin D3 formula NSF Certified for Sport, making it a trusted option for athletes and active adults looking to support bone integrity, muscle maintenance, and immune function as part of a consistent daily wellness routine.

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-5000: 

• 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 an athlete needs to know that his or her 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 more than 200 substances banned by many major athletic organizations, including stimulants, narcotics, steroids, diuretics, beta-2 agonists, and masking agents.

Suggested Use:

Take 1 capsule daily or as recommended by your health professional.

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 professional before using this product.

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

Who Thorne Vitamin D-5,000 Is Built For

• Indoor and low-sun-exposure athletes: Those who train indoors or live at northern latitudes often have limited sunlight-driven D3 synthesis, making a high-potency supplement a practical addition to their routine.
• Competitive and tested athletes: The NSF Certified for Sport designation means the product has been independently tested for banned substances, supporting confidence for those subject to sport drug-testing protocols.
• Adults focused on bone and muscle health: The formula supports healthy teeth, bones, and lean muscle maintenance, and it enhances calcium absorption and retention.
• Those seeking a clean formulation: Free from lactose and common preservatives such as BHT, BHA, sodium benzoate, and sorbic acid, it suits individuals who prioritize minimal-additive supplements.

Frequently Asked Questions

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

Thorne uses vitamin D3, which is considered more potent and better absorbed than vitamin D2. The formula is also NSF Certified for Sport, meaning it has been independently tested and verified for purity and label accuracy.

Is Thorne Vitamin D-5,000 safe for competitive athletes subject to drug testing?

The product carries the NSF Certified for Sport certification, an independent third-party program widely recognized for verifying that supplements are free from substances prohibited in sport. Athletes subject to testing should confirm with their governing body that this certification meets their requirements.

Who is most likely to benefit from adding a vitamin D supplement to their routine?

According to Thorne, individuals who spend limited time outdoors, live in northern latitudes, regularly use high-SPF sunscreen, or train primarily indoors may not obtain sufficient vitamin D from sunlight or diet alone. A supplement can help support healthy levels as part of an overall wellness routine.