Swanson Premium Brand Selenium (L-Selenomethionine) 100 mcg
Brand: Swanson Premium Brand · Form: CAPSULE [E0159]
Our assessment
The evidence shows that this product provides 100 mcg of selenium in the L-selenomethionine form, which is a well-absorbed source of this essential mineral. However, data specific to this exact supplement is not available. Data not available on clinical studies for this exact product.
How it works
Selenium is a component of selenoproteins, which are enzymes that help protect your cells from oxidative damage. It also plays a role in thyroid hormone metabolism and immune function. The L-selenomethionine form is efficiently incorporated into your body's proteins [NIH ODS].
Safety profile
FDA received 592,059 total adverse event reports for all dietary supplements. Data not available on specific adverse event reports for this product. For selenium in general, chronic high intake can lead to selenosis, which may cause symptoms like garlic breath odor, hair loss, and nail brittleness [NIH ODS].
Our recommendation
For most adults, the recommended dietary allowance for selenium is 55 mcg daily, and the tolerable upper intake level is 400 mcg daily [NIH ODS]. This 100 mcg dose is within safe limits for most people. We recommend you do not exceed one capsule daily and consult your healthcare provider before starting any new supplement, especially if you take other medications or have a medical condition.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Swanson Premium Brand |
|---|---|
| Serving Size | |
| Contents | 200.0 Capsule(s) |
| 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