Swanson Ultra SeMSC Selenium 200 mcg
Brand: Swanson Ultra · Form: CAPSULE [E0159]
Our assessment
The evidence shows that the key ingredient in this product, selenium, is an essential trace mineral, but data provided specifically for this "Swanson Ultra SeMSC Selenium 200 mcg" formula is limited. Our assessment is based on the general ingredient, calcium, which is not the primary ingredient listed. For the ingredient calcium, the data supports its role in bone health, but you should be aware of potential risks at high intakes [NIH ODS].
How it works
Think of calcium as a building block for your skeleton. It supports bone mineralization and density, and it also helps with muscle relaxation and nerve signaling [NIH ODS].
Safety profile
Data for this specific product is not available. For the ingredient calcium, high intakes might increase the risk of heart disease and prostate cancer. High levels in the blood and urine can cause poor muscle tone, poor kidney function, low phosphate levels, constipation, nausea, weight loss, extreme tiredness, frequent need to urinate, abnormal heart rhythms, and a high risk of death from heart disease [NIH ODS]. The FDA has received a total of 592,059 adverse event reports across all supplements, but specific report counts for this product are not available [FDA data].
Our recommendation
Our recommendation is to consult your healthcare provider before starting this supplement, as specific safety and efficacy data for this product is not available. Be aware that calcium supplements can reduce the absorption of medications like bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Swanson Ultra |
|---|---|
| Serving Size | |
| Contents | 120.0 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