
Thorne Research
Thorne Research Vitamin D 500 IU (30 mL)
Liquid vitamin D3 drops for daily immune and bone support
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Why Choose This Product
IMMUNE SUPPORT
Helps maintain immune function with bioavailable vitamin D3 cholecalciferol.
LIQUID ABSORPTION
Liquid format allows for faster absorption compared to tablets or capsules.
PRECISE DOSING
Each drop delivers exactly 500 IU, making it easy to adjust your intake.
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How It Works
How It Works
Vitamin D3 (cholecalciferol) is the same form your skin produces from sunlight. Once absorbed, your liver and kidneys convert it to the active hormone that supports immune function and helps your body absorb calcium for bone health.
Who It's For
Adults and children who want reliable vitamin D3 intake, especially during Canadian winters. Perfect for those who prefer liquid supplements or need flexible dosing. Ideal if you spend limited time outdoors or have concerns about vitamin D deficiency.
Who It's Not For
Not suitable if you're already taking high-dose vitamin D supplements without monitoring blood levels. Those on blood thinners should consult their healthcare practitioner first.
About This Product
What It Does
Supports immune function and bone health with highly absorbable vitamin D3 drops. Each drop provides 500 IU of cholecalciferol, the same form your body makes from sunlight. The liquid format works faster than tablets, giving you flexible control over your daily intake.
Why It Works
- BIOAVAILABLE FORM: Cholecalciferol (D3) is more effective than vitamin D2 at raising and maintaining blood levels.
- LIQUID ADVANTAGE: Bypasses digestion challenges that can limit tablet absorption, especially for those with digestive sensitivities.
- CARRIER OIL: Medium chain triglycerides enhance fat-soluble vitamin absorption compared to alcohol-based tinctures.
What's Inside
Simple formula with vitamin D3, MCT oil carrier, and mixed tocopherols for stability. No artificial colours, flavours, or unnecessary fillers. 600 drops per bottle provide months of daily use.
Why we carry it: Thorne's pharmaceutical-grade manufacturing and third-party testing deliver the purity standards serious health-focused customers expect.
How to Take
Full Ingredients
| MEDICINAL INGREDIENTS | ||||
| Serving Size: 1 Drop | ||||
| Serving Contains: 30 ml | ||||
| Amount/Serving | ||||
| Vitamin D3 (Cholecalciferol) | 12.5 μg | |||
| Non-Medicinal Ingredients: Medium Chain Triglycerides, Mixed Tocopherols. | ||||
Customer Reviews
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Questions & Answers
Research & Science
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