THORNE - Vitamin D3 Supplement - Supports Healthy Bones Teeth Muscles Cardiovascular & Immune Function* - Gluten Dairy & Soy-Free - 10 000 IU - 60 Capsules
ThorneAnalysis updated October 2026 · How Scout scores
At a glance
Summary
This Vitamin D3 supplement from Thorne features high-quality ingredients, including Vitamin D3, leucine, and natural Vitamin E, which are beneficial for bone health, immune function, and muscle maintenance. The formulation is clean, with minimal additives and no harmful substances, making it a strong choice for those seeking a high-potency Vitamin D3 supplement. The use of microcrystalline cellulose and silicon dioxide as minor additives does not significantly detract from its overall quality.
Key ingredients 6
Vitamin D3Good
Vitamin D3 is essential for calcium absorption and bone health. It supports immune function and has been linked to improved mood and cardiovascular health. This supplement provides a high-quality form of Vitamin D3, which is more effective than Vitamin D2.
Risks
Excessive intake of Vitamin D3 can lead to toxicity, causing hypercalcemia and associated health issues.
Benefits
Vitamin D3 supports bone health, immune function, and may improve mood and cardiovascular health.
LeucineGood
Leucine is a branched-chain amino acid that plays a critical role in muscle protein synthesis. It is particularly beneficial for muscle recovery and growth. This ingredient is often included in supplements to support athletic performance and muscle maintenance.
Benefits
Leucine supports muscle protein synthesis and aids in muscle recovery and growth.
Vitamin EGood
Vitamin E is an antioxidant that helps protect cells from oxidative damage. It supports immune function and skin health. This supplement uses d-Alpha-Tocopherol, a natural and effective form of Vitamin E.
Risks
Excessive intake of Vitamin E can lead to bleeding risks and other health issues.
Benefits
Vitamin E supports immune function, skin health, and protects cells from oxidative damage.
Microcrystalline CelluloseNeutral
Microcrystalline cellulose is a common filler and binder used in supplements. It is derived from plant fibers and is considered safe for consumption. It does not provide nutritional benefits but helps in the manufacturing process.
See more about Microcrystalline Cellulose →Silicon DioxideNeutral
Silicon dioxide is used as an anti-caking agent in supplements. It is naturally occurring and considered safe for consumption. It helps maintain the free-flowing properties of powdered ingredients.
See more about Silicon Dioxide →HypromelloseNeutral
Hypromellose is a plant-derived compound used to form capsules. It is a safe alternative to gelatin for those avoiding animal products. It does not contribute nutritional value but is essential for capsule formation.
See more about Hypromellose →Processing
Unprocessed or Minimally Processed Foods
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