mineral

Selenium supplements

Half of the 7,658 selenium supplements in the NIH label database that print an amount list 55 mcg or less per serving; the middle half list 27 mcg to 100 mcg, and 1 in 128 of the 7,541 with a plausible amount give more than the adult upper limit at the most servings their labels direct (DSLD version 9.4.0, January 2026). The 182 products whose only supplement ingredient is selenium list a median of 200 mcg, and 1 in 91 of them give more than the upper limit.

How much selenium do supplements contain?

The median product lists 55 mcg per serving. One in ten lists 16 mcg or less, one in ten 200 mcg or more. The amount printed most often is 200 mcg (1,155 products).

How do the amounts compare with the Daily Value and the upper limit?

The FDA Daily Value for selenium is 55 mcg (adults and children 4 and older). The median product gives 100% of it per serving; the 90th percentile 364%.

The adult Tolerable Upper Intake Level is 400 mcg a day (total intake from food, water and supplements). At the most servings their labels direct, 59 of the 7,541 products with a plausible amount (0.8%) give more than that from the supplement alone (what counts as plausible).

The upper limit is for total intake from food, water and supplements unless stated, and does not apply under medical supervision. A label amount is what the maker printed. This is data, not advice: the NIH ODS fact sheets explain what each nutrient does.

Which forms of selenium do labels name?

Selenomethionine is the form named most often: 3,041 of the 7,934 selenium products (38%), ahead of sodium selenate (709, 9%) and sodium selenite (660, 8%). A product naming two forms counts in both; the table below gives every form.

• Selenomethionine
• Sodium selenate
• Sodium selenite
• Selenium glycinate
• Selenium yeast

Which products list the most selenium?

On-market products, per serving, with a plausible amount: the rule leaves out likely entry slips, such as an amount far beyond every other label with no %DV or strength on the label to back it (each product page still shows its own amount, marked).

• Oligo SeleniumMBi Nutraceuticals900 mcg
• H2plxPriority One Nutritional Supplements800 mcg
• SkinRestoreHerbs SRA800 mcg
• Ultimate Selenium ConcentrateComplete H2O Minerals750 mcg
• Sports Blend Electrolite Liquid MineralsComplete H2O Minerals600 mcg
• Drink WiseVitinity500 mcg
• ViraGuardEquip400 mcg
• SeleniumZemvelo400 mcg

Have the amounts changed over the years?

Products whose current label entered DSLD in 2011 list a median of 70 mcg; those entered in 2025, 70 mcg.

In which products and brands?

Brands listing it most: Douglas Laboratories (221), Nature's Plus (173), Nature's Way (156), Bronson (68), New Chapter (63), Rainbow Light (62), Kirkman (60), MegaFood (56), XYMOGEN (56), NOW (56).

Every product listing selenium

7,934 products, A to Z by name (page 3 of 159), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.

• Absorbable Selenium 200 mcgVitamin World200 mcg
• Absorbable Selenium 200 mcgPuritan's Pride200 mcg
• Accell TherapeuticSystemic Formulas155 mcg
• AccuVisionZahler · off the market50 mcg
• AccuVisionAdvanced Nutrition by Zahler50 mcg
• ACE Antioxidant21st Century · off the market15 mcg
• AcesCarlson100 mcg
• ACES + OmegaCarlson50 mcg
• ACES GoldCarlson140 mcg
• ACES+ZnCarlson100 mcg
• Acnaway VitaminsHerbaMe100 mcg
• Acne FormulaFreeda · off the market200 mcg
• AcnetameAddrena100 mcg
• ACNEtaneNutriissa2,000 mcg as transcribed, likely a slip
• AcnutrolDesigns for Health100 mcg
• ActathroidNutrients for Health200 mcg
• Activated Coral CalciumNatures Plus · off the market30 mcg
• Activated Coral CalciumNaturesPlus30 mcg
• ActivatorNutri-Spec100 mcg
• ActiveComplete Active1 mcg
• ActiveGNC Women's Ultra Mega200 mcg
• Active 50+ Once Daily Multivitamin & Mineral Plus Probiotics (Digestive Support)Trader Joe's200 mcg
• Active 55Buried Treasure Liquid Nutrients100 mcg
• Active 55 Plus Senior ComplexBuried Treasure · off the market100 mcg
• Active Adult 50+Rainbow Light · off the market55 mcg
• Active Adult 50+ MultivitaminRainbow Light · off the market55 mcg
• Active ChocolateGNC Women's Ultra Mega200 mcg
• Active Health TeenRainbow Light · off the market50 mcg
• Active Health Teen MultivitaminRainbow Light · off the market50 mcg
• Active ImmunityAkasha Naturals67 mcg
• Active Immunity + Elderberry Berry BraveOLLY15 mcg
• Active Immunity + Elderberry Blood OrangeOLLY · off the market15 mcg
• Active ManMET-Rx200 mcg
• Active Man's FormulaVitabase100 mcg
• Active Men's Alpha-MultiVivid Health Nutrition100 mcg
• Active Milk ChocolateGNC Women's Ultra Mega200 mcg
• Active Mixed BerryGNC Ultra Mega Green200 mcg
• Active Multi PacksMET-Rx200 mcg
• Active Multi ViteGenestra Brands110 mcg
• Active Multi Vite Without Vitamin AGenestra Brands110 mcg
• Active One Multi with IronSwanson Premium Brand · off the market200 mcg
• Active SeniorRainbow Light · off the market200 mcg
• Active Senior SafeGuard MultivitaminRainbow Light · off the market200 mcg
• Active Seniors UnflavoredAll One50 mcg
• Active VanillaGNC Women's Ultra Mega200 mcg
• Active Vanilla CremeGNC Women's Ultra Mega200 mcg
• Active Vanilla FlavorReliv25 mcg
• Active Vitamin PackKirkland Signature55 mcg
• Active without IronGNC Women's Ultra Mega200 mcg
• Active WomanMet-Rx200 mcg

Where next?

• Check an amount of selenium
• Labels above the upper limit
• All ingredients