What the official page says
The label combines three selenium forms—L-selenomethionine, sodium selenite and Se-methyl L-selenocysteine—with vitamin E. The total selenium amount is more important than counting the forms in isolation.
What to verify next
Selenium is required for selenoproteins, but the useful range is narrow and more is not automatically better. Compare the label with dietary intake and the NIH upper-limit discussion.
How the formula may work
Selenium is incorporated into selenoproteins involved in antioxidant defence, thyroid hormone metabolism and other cellular processes. Vitamin E contributes lipid-phase antioxidant activity. Both nutrients have a range where excess can be harmful, so total intake is central to the decision.
Active ingredients
Ingredient names and amounts follow the official source where disclosed. Missing values are not inferred.
Other ingredients / excipients
- Selenium 200 mcg per capsule
- Vitamin E 20.1 mg
- 100 vegetarian capsules Item 01778
Label serving direction
Take one capsule daily with food, or as recommended by a healthcare practitioner.
Primary health-goal users
- Adults comparing selenium forms and total selenium dose
- Readers considering a selenium product alongside a multivitamin
- People able to review thyroid status and dietary selenium with a professional
Potential benefits and evidence framing
- Provides 200 mcg total selenium in three labelled forms
- Supports normal selenoprotein and thyroid-related biology when intake is appropriate
- The product page positions it for thyroid and healthy aging; this is not proof that more selenium improves health
Possible adverse effects
- Excess selenium can cause garlic-like breath, metallic taste, hair or nail changes, rash, nausea or nervous-system symptoms
- High vitamin E intake may increase bleeding concerns in some contexts
- Stomach upset or sensitivity to excipients is possible
Contraindications and precautions
- Do not combine with other selenium products without calculating total intake
- Review anticoagulants, bleeding conditions, thyroid treatment, kidney/liver disease, pregnancy and lactation
- Do not use a high-dose selenium product to self-treat a thyroid condition
Questions to keep visible
Do not stack with other selenium products without calculating the total. Review thyroid evaluation, kidney or liver concerns, pregnancy, lactation and medicines with a professional.
Evidence and source trail
- Life Extension — Super Selenium Complex product page Source type: Official product page · Source language: English · Last checked: 2026-08-04
- NIH ODS — Selenium Source type: Independent public-health reference · Source language: English · Last checked: 2026-08-04