Key Benefits

• Helps keep your teeth and bones healthy and resilient.

• Supports normal muscle function, so you can move with confidence.

• With vitamin D to help your immune system work at its best.

• Assists your body in absorbing and using calcium and phosphorus.

• Includes vitamin E to help protect your cells from oxidative stress.

Feel your best with Thorne’s Vitamin D 10,000—a high-strength, easily absorbed D3 formula. Vitamin D3 is the preferred form for effective absorption, especially when sunlight is in short supply. Whether you’re looking to support your bones, muscles, or immune system, this daily capsule fits seamlessly into your routine. Plus, it’s made without lactose or preservatives, so you can trust what you’re taking.

What sets Thorne apart is its third-party testing and certification, ensuring that the contents of the package match the label and are free from unsafe levels of contaminants like heavy metals, pesticides, and microorganisms. This commitment to purity and accuracy gives you peace of mind knowing that what you’re taking is safe and effective .

Thorne sets the standard for excellence in the supplement industry. Recommended by over 100 professional sports teams and U.S. National Teams, Thorne offers a curated bundle of clean, science-backed supplements and treats designed complement a healthy lifestyle. With more than 30 years of dedication to quality, Thorne's commitment to purity and potency begins with sustainably sourced ingredients and rigorous testing. Every supplement undergoes four rounds of testing to ensure optimal absorption, safety, and efficacy, making Thorne the trusted choice for both health-conscious individuals and professionals.

With our Healf Curation Process, we do the work for you. Shop with confidence knowing that every item has been tried, tested, and curated for you.

Learn more about each step—Brand Discovery, Expert Validation, and Community Testing—here.

L-Leucine, Vitamin D (as Vitamin D3) (10,000 IU), Bulking Agent (Microcrystalline Cellulose), Hypromellose (Derived from Cellulose) Capsule, Anti-Caking Agent (Silicon Dioxide), Vitamin E (D-alpha-Tocopheryl)

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

Additional Information:

Food supplements and foods sold by Healf should not be used as a substitute for a varied, balanced diet and healthy lifestyle.

If you are pregnant, breastfeeding, have a medical condition, or are taking any medications, please consult with a healthcare professional before use. Use products only if the seal is intact. Store in a cool, dry place, out of the reach of young children. Do not exceed the recommended daily intake.

We make every effort to ensure that product information on our website is accurate and up to date, but packaging and ingredients may occasionally vary from images shown on site. Please refer to the product label and contact Healf before use if you have any questions regarding your specific allergies or intolerances.