Key Benefits

• Helps maintain normal teeth and bones with vitamin D3.
• Supports normal muscle function for everyday movement.
• Assists with the absorption and use of calcium and phosphorus.
• With vitamin D3 to help your immune system work as it should.
• Includes vitamin E, which helps protect cells from oxidative stress.

Feel confident in your daily routine—Thorne’s Vitamin D-1,000 delivers a highly absorbable form of vitamin D3, designed to fit seamlessly into your lifestyle.

Each capsule provides 1,000 IU (25mcg) of premium vitamin D3, making it easy to meet your daily needs—especially if you spend little time in the sun or find it hard to get enough vitamin D from food alone.

Vitamin D3 in this formula helps maintain normal bones, teeth, and muscle function, supports the absorption and use of calcium and phosphorus, and contributes to the normal function of your immune system. Vitamin E is included to help protect your cells from oxidative stress.

Thorne’s commitment to quality means this supplement is free from lactose and common preservatives like BHT, BHA, sodium benzoate, and sorbic acid—so you can trust what you’re taking every day.

Thorne is dedicated to science-led wellbeing, creating supplements that help you feel your best at every stage of life. Their mission is to support your health journey with thoughtful, high-quality formulations.

Thorne’s Vitamin D-1,000 is third-party tested and certified to guarantee ingredient accuracy and safety. This process confirms that the product is free from harmful levels of contaminants, including heavy metals, pesticides, and microorganisms. By choosing this supplement, you ensure that your body receives clean, reliable support for maintaining healthy bones, immunity, and overall wellbeing.

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 to fuel your body naturally and effectively. 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.

Vitamin D3: 25mcg

Other Ingredients: Hypromellose Capsule, Leucine, Microcrystalline Cellulose, Silicon Dioxide, Vitamin E (d-Alpha-Tocopheryl)

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

If pregnant, consult your health professional before using this product.

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

Gluten and lactose-free.

Take 1 capsule one to three times 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.