Supplement reference
Selenium (Selenomethionine)
A source-linked reference on Selenium (Selenomethionine), evidence, safety and product identity. Sources checked 6 September 2026.
Source and review status
Published sources checked
Sources checked on: 6 September 2026
Qualified clinical review: Pending. This page has not been clinically reviewed.
About this source check
AI-assisted editorial source checking covers the cited material and its stated limits. It is not a systematic review, verification of a supplied product, or clinical sign-off.
Editorial role: InfoAddict. Last material change: 6 September 2026. Next source review: 6 March 2027.
Ingredient and preparation
Selenomethionine is one supplemental form of selenium. It is not interchangeable with a clinical assessment of selenium status.
Sources: National Institutes of Health, Office of Dietary Supplements
Evidence and limits
NIH describes selenium as essential but does not establish selenomethionine as a superior form for thyroid, immunity or cancer outcomes. Adequacy is different from benefit from more intake.
Sources: National Institutes of Health, Office of Dietary Supplements
Safety and a useful record
Selenium can be harmful in excess. Check all multivitamins, diet and supplements rather than adding sources without a total-intake review.
Sources: National Institutes of Health, Office of Dietary Supplements, National Center for Complementary and Integrative Health
Record selenium form and amount, other products and any laboratory assessment with its reference range.
Sources: National Center for Complementary and Integrative Health
Published sources
- Selenium: Fact Sheet for Consumers
National Institutes of Health, Office of Dietary Supplements. Current NIH ODS reference; accessed 6 September 2026.
Supports: Selenium functions, intake and adverse-effect context. It does not establish selenomethionine-specific outcomes.
- Safe Use of Complementary Health Products and Practices
National Center for Complementary and Integrative Health. Current NCCIH reference; accessed 6 September 2026.
Supports: General safety, interaction and contamination context. It does not establish ingredient-specific benefit.
Change history
| Date | Change | Clinical-review status |
|---|---|---|
| 6 September 2026 | Source-linked reference published | Pending |
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