Thorne Research Vitamin D
Brand: Thorne Research · Form: LIQUID, SUPPLEMENT FORM [E0165]
Our assessment
The evidence shows that Thorne Research Vitamin D is a straightforward, single-nutrient supplement. Vitamin D is essential for calcium absorption and bone health. For adults aged 19–70, the Recommended Dietary Allowance is 600 IU daily [NIH ODS]. Based on the data provided, we cannot confirm the specific IU per serving for this product, as the ingredient information is not listed. You should check the label on your bottle to see the exact dosage per capsule.
How it works
Think of vitamin D as a master regulator — it helps your body absorb calcium from food to build and maintain strong bones [NIH ODS]. It also supports immune function by helping your cells respond to threats. The body produces vitamin D when skin is exposed to sunlight, but many people require a supplement to maintain adequate levels, especially during winter months or if they have limited sun exposure [NIH ODS].
Safety profile
Data not available. The FDA data provided does not include adverse event reports specific to Thorne Research Vitamin D. In general, vitamin D is safe when taken at recommended doses. However, taking very high amounts (typically above 4,000 IU daily for extended periods) can lead to toxicity, causing nausea and kidney stones [NIH ODS]. Because the exact dosage of this product is not provided in the data, we cannot assess its specific safety margin.
Our recommendation
Check the label on your Thorne bottle for the IU per serving. If it provides 600–1,000 IU daily, that is a reasonable starting point for most adults [NIH ODS]. To be certain you are taking the right dose, consider getting a blood test to measure your 25-hydroxyvitamin D level. If your levels are low, a higher dose may be appropriate under medical supervision. For best absorption, take this supplement with a meal that contains some fat [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Thorne Research |
|---|---|
| Serving Size | |
| Contents | 1.0 fl. Oz. 30.0 mL |
| Market Status | Off Market |
How to Read This Label
Supplement labels contain several key sections regulated by the FDA:
- Serving Size — The recommended amount per dose. Always check this — some products require multiple capsules per serving.
- Amount Per Serving — Shows the quantity of each nutrient in the product, typically in IU (International Units), mg (milligrams), or mcg (micrograms).
- % Daily Value (%DV) — Indicates how much a nutrient in a serving contributes to a daily diet. 5% DV or less is low; 20% DV or more is high.
- Other Ingredients — Lists inactive ingredients like fillers, binders, and capsule materials (e.g., gelatin, cellulose, magnesium stearate).
- Suggested Use — The manufacturer's recommended directions for taking the supplement, including timing and dosage.
Source: FDA Dietary Supplement Labeling Guide