Thorne FX Vitamin D Complex
Brand: Thorne FX · Form: LIQUID, SUPPLEMENT FORM [E0165]
Our assessment
The evidence shows that vitamin D is a critical nutrient for overall health, but we must be precise about what the data actually supports. For the Thorne FX Vitamin D Complex, specific clinical study data is not available in the provided information. However, for vitamin D in general, the data confirms that maintaining adequate levels is essential for immune function and bone health [NIH ODS]. Our assessment is that while the specific product lacks study data, the ingredient itself has well-documented benefits when used appropriately.
How it works
Think of vitamin D as a master regulator — it helps your body absorb calcium for strong bones and supports your immune system's ability to respond to threats [NIH ODS]. The body produces vitamin D when skin is exposed to sunlight, but many people do not get enough from sun exposure alone, making supplementation a reliable option [NIH ODS]. For the Thorne FX formulation, specific mechanism data is not available beyond general vitamin D knowledge.
Safety profile
For vitamin D supplements generally, FDA received 694 adverse event reports. Side effects reported include nausea at very high doses [FDA data]. It is important to note that vitamin D toxicity is rare but possible with excessive intake, typically above 10,000 IU daily over long periods [NIH ODS]. For the Thorne FX Vitamin D Complex specifically, product-specific side effect data is not available in the provided information.
Our recommendation
Start at 600 IU daily for general health, but have your blood levels checked first to determine your personal needs [NIH ODS]. Choose vitamin D3 (cholecalciferol) for better absorption, which is the form typically used in quality supplements like Thorne [NIH ODS]. Since specific clinical study data for the Thorne FX formulation is not available, we recommend consulting your healthcare provider before starting this or any new supplement regimen.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Thorne FX |
|---|---|
| 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