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L-Selenomethionine 200 mcg

product on market Tablet or Pill SuperSmart Safety: 60/100
60/100

Review before taking

  • L-Selenomethionine: 0.48mg is 1.2× the Tolerable Upper Intake Level (0.4mg)
  • 100% of ingredients have research evidence
C Label Compliance Grade

What the Evidence Says

AI-generated · Qwen 3.6 · grounded in 1 source · methodology

L-selenomethionine provides a bioavailable form of selenium that supports antioxidant enzyme function and thyroid health. Evidence for these benefits is generally moderate, though the low safety score suggests potential concerns regarding toxicity if taken in excess. Users should monitor intake to avoid selenium accumulation.

AI-generated summary based on research evidence. Not medical advice.

Alerts

Safety Alerts

L-Selenomethionine: 0.48mg is 1.2× the Tolerable Upper Intake Level (0.4mg)

AI-generated · Qwen 3.6 · grounded in 2 sources · methodology

This product received a low safety score because it contains more selenium than the recommended daily upper limit. Exceeding this limit can be unsafe for some users.

Label

Product Label

Label for L-Selenomethionine 200 mcg
Open Full PDF View on NIH DSLD →
Details

Label Data

1 Tablet(s)
Serving Size
120
Servings
Amino acid/Protein
Product Type
100%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Exceeds UL by 1.2× (UL: 0.4 mg) 173 studies (A:0, B:67)

Other Ingredients

Acacia Gum Fructo-Oligosaccharide
Claims

Label Claims — Verification

Unverified All Other
Info

Product Information

Directions for Use

Recommended Use: Adults. Take one tablet a day with food.

Warnings & Precautions

Precautions: Do not exceed the recommended daily dose. This product is a nutritional supplement and should not replace a varied, balanced diet.

Keep out of childrens' reach.

As with any nutritional supplement, you should consult a health professional before taking this product if you are pregnant, breastfeeding or have a health problem.

Formulation Notes

L-Selenomethionine 200 mcg per day

Additional Information

Store away from direct light, heat and humidity.

Metadata

Product Details

UPC / SKU5 453003 825029
DSLD Entry Date2023-05-24
Product TypeAmino acid/Protein
FormTablet or Pill
DSLD ID285328
Data Updated2026-04-11
Research

Research Evidence

273
Research Sources
55
Avg Quality
131
Meta Analysis
61
Systematic Review
55
Rct
19
Clinical Trial
2
Regulatory Source
1
Cochrane Review
1
Other
1
Observational
1
Openfda Safety
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A Selenium supplementation for the primary prevention of cardiovascular disease
Meta Analysis The Cochrane database of systematic reviews 2013 PubMed DOI
A Selenium supplementation for critically ill adults
Meta Analysis The Cochrane database of systematic reviews 2015 PubMed DOI
A Vitamin E and the risk of prostate cancer: the Selenium and Vitamin E Cancer Prevention Trial (SELECT)
Rct JAMA 2011 PubMed DOI
B Selenium and prostate cancer: systematic review and meta-analysis
Meta Analysis The American journal of clinical nutrition 2012 PubMed DOI
B Selenium supplementation for Hashimoto's thyroiditis
Systematic Review The Cochrane database of systematic reviews 2013 PubMed DOI
B Pharmacological interventions for preventing dry mouth and salivary gland dysfunction following radiotherapy
Meta Analysis The Cochrane database of systematic reviews 2017 PubMed DOI
B Selenium, antioxidants, cardiovascular disease, and all-cause mortality: a systematic review and meta-analysis of randomized controlled trials
Meta Analysis The American journal of clinical nutrition 2020 PubMed DOI
B The effect of selenium supplementation on coronary heart disease: A systematic review and meta-analysis of randomized controlled trials
Meta Analysis Journal of trace elements in medicine and biology : organ of the Society for Minerals and Trace Elements (GMS) 2017 PubMed DOI
B Meta-analysis of selenium effects on the meat quality of broilers
Meta Analysis Poultry science 2024 PubMed DOI
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This product page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before taking any supplement.