Trace Minerals Research Ionic Selenium 300 mcg
Brand: Trace Minerals Research · Form: LIQUID, SUPPLEMENT FORM [E0165]
Our assessment
The evidence shows that selenium is an essential trace mineral, but the 300 mcg dose in this product is a critical concern. Data indicates that the Tolerable Upper Intake Level for selenium is 400 mcg per day from all sources [NIH ODS]. Taking this supplement could put you very close to that upper limit, especially if you also consume selenium from food. We advise caution and a review of your total daily intake.
How it works
Selenium is a key component of selenoproteins, which act as powerful antioxidants to protect your cells from damage [NIH ODS]. It is vital for thyroid hormone metabolism and supports a healthy immune system [NIH ODS]. Think of it as a cellular bodyguard that helps neutralize oxidative stress.
Safety profile
Data not available for specific adverse event reports for this product. However, chronic intake above 400 mcg daily can lead to selenosis, with symptoms including garlic breath odor, hair loss, and nail brittleness [NIH ODS]. The 300 mcg dose in this product carries a risk of pushing you into unsafe territory if you have a selenium-rich diet or take other supplements [NIH ODS].
Our recommendation
We do not recommend starting this product without first consulting your healthcare provider. A blood test to measure your selenium levels is essential. Most adults need only 55 mcg daily from food [NIH ODS]. Unless you have a confirmed deficiency, a high-dose supplement like this is unnecessary and carries potential risks.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Trace Minerals Research |
|---|---|
| Serving Size | |
| Contents | 2.0 fl. Oz. 59.0 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