THORNE Vitamin D3 1,000 IU Daily Supplement — 180 Capsules, Supports Bone Health & Absorption

THORNE Vitamin D-1,000 delivers 1,000 IU of vitamin D3 per capsule to help maintain healthy bone support, calcium absorption, and daily vitamin D levels.

Many people struggle to get consistent sun exposure or dietary vitamin D, especially during winter or for indoor lifestyles. THORNE Vitamin D-1,000 supplies cholecalciferol (D3), the form of vitamin D most often shown to raise and sustain circulating vitamin D status. Each bottle contains 180 easy-to-take capsules, offering a multi-month supply for daily maintenance.

How will taking THORNE Vitamin D-1,000 fit into my daily routine?

These small capsules are designed for simple daily use; take one capsule with a meal to support absorption since vitamin D is fat-soluble. The 1,000 IU dose is convenient for everyday maintenance and can be combined with professional guidance for individualized needs.

• One capsule per day provides 1,000 IU (cholecalciferol / D3).
• Take with food containing some fat for better uptake.
• 180 capsules per bottle supply about six months of daily dosing.

Why choose vitamin D3 over other forms of vitamin D?

Vitamin D3 (cholecalciferol) is the form most readily converted to the active forms your body uses and is typically more effective at raising serum vitamin D levels than vitamin D2. THORNE formulates this product with D3 to prioritize absorption and potency for maintenance use.

• Cholecalciferol is generally better absorbed than ergocalciferol (D2).
• D3 tends to produce more sustained increases in vitamin D status.
• Formulated for predictable daily supplementation and long-term use.

What quality checks ensure the product contains what the label states?

THORNE uses third-party testing to confirm ingredient identity, potency, and absence of unsafe contaminant levels. Independent verification provides transparency for consumers who want assurances that the bottle matches label claims.

• Third-party tested for ingredient accuracy and contaminant safety.
• Manufactured according to current quality standards and controls.
• Brand recognized and used by professional organizations and practitioners.

Can THORNE Vitamin D-1,000 help people who spend most time indoors?

Supplemental D3 is commonly used by individuals with limited sun exposure or seasonal variations in sunlight. This product supports routine replenishment of vitamin D levels as part of a broader wellness plan, ideally guided by a healthcare professional.

• Useful for seasonal or lifestyle-related low sun exposure.
• Appropriate for daily maintenance dosing when recommended.
• Easy long-term supply with 180 capsules per bottle.

Who is this for: THORNE Vitamin D-1,000 is suited for adults seeking a reliable, third-party tested vitamin D3 supplement for everyday maintenance—especially those with limited sun exposure, individuals looking for a physician-recommended brand, or anyone wanting a long-lasting supply of 1,000 IU capsules. Consult a healthcare provider for personalized dosing or if you have specific health conditions or medication interactions.

Ingredients

One Capsule Contains: %DV Vitamin D (as Vitamin D3) (1,000 IU) 25 mcg 125% Daily Value (DV) Other Ingredients: Microcrystalline Cellulose, Hypromellose (derived from cellulose) capsule, Leucine, Silicon Dioxide, Vitamin E (d-Alpha Tocopheryl).