Life Extension Super Selenium Complex is a selenium supplement that helps boost antioxidant defence for daily resilience and support normal thyroid function, delivering steadier energy and healthier cellular ageing. The blend uses three different selenium forms to widen coverage of selenoprotein activity. It reflects Life Extension's longstanding commitment to science-led nutrition and quality standards.

Available Sizes & Variants:

100 capsules - Vegetarian selenium supplement with three selenium forms.

Benefits & Features:

• Supports antioxidant defence for daily resilience as part of your selenium supplements routine.
• Delivers three selenium forms to broaden coverage of selenoprotein activity and support overall health.
• Vitamin E helps regenerate antioxidant capacity and protects lipids, strengthening cellular resilience.
• Designed for daily use, the capsule format slips into most routines, and yeast-free L-selenomethionine supports absorption while the triple selenium blend broadens coverage.
• Vegetarian, Non-GMO capsules align with health goals and dietary preferences, naturally.

Life Extension's Super Selenium Complex reflects the brand's longstanding dedication to science-led nutrition. The formula blends three selenium forms - Se-methyl L-selenocysteine, L-selenomethionine and sodium selenite - with Vitamin E, delivering 200 mcg total selenium per capsule for antioxidant support. The vegetarian, Non-GMO capsules are produced under GMP guidelines, with yeast-free L-selenomethionine chosen for absorption and allergen considerations. Research from Dr. Rayman at the University of Nottingham shows daily selenium can support antioxidant enzymes and thyroid function. This product also pairs well with probiotics for gut health and a vitamin d supplement as part of a rounded wellness routine.

Vitamin E (as d-alpha Tocopheryl Succinate), Selenium (as Se-Methyl L-Selenocysteine, SelenoPure L-selenomethionine (yeast-free), sodium selenite), Vitamin E (as d-alpha Tocopheryl Succinate), Selenium (as Se-Methyl L-Selenocysteine, SelenoPure L-selenomethionine (yeast-free), sodium selenite)

• GTIN: 737870177814
• Manufacturer: Life Extension
• Categories: Life ExtensionMineralsSelenium Supplements
• Best buy: 6 - 24 months+

United Kingdom Shipping:

Orders placed by 2pm (Monday to Friday) are dispatched the same day. Orders placed after 2pm will be dispatched the next working day.

Free shipping on orders over £50 to the UK.

Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 30 days in the same original and unopened packaging. Subject to T&C's.

Take one (1) vegetarian capsule daily with food, or as recommended by your healthcare practitioner. Store in a cool, dry place. Keep out of reach of children. Do not exceed the recommended dose. Do not purchase if the outer seal is broken or damaged. Consult your physician if you are undergoing treatment for a medical condition or if you are pregnant or lactating.

Please consult the product packaging for accurate instructions on how to use the product.

*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

The Active Ingredient Is: Selenium (Se-methyl L-selenocysteine, L-selenomethionine, and sodium selenite)

Selenium is a trace mineral essential for normal cellular function and antioxidant protection. This formulation combines three bioavailable forms to broaden selenium coverage in the body.

These forms provide selenium from diverse sources to support selenoprotein activity and antioxidant processes, alongside Vitamin E to enhance antioxidant action.

What Does Selenium Do?

Selenium acts as a key cofactor for glutathione peroxidase and other selenoproteins, contributing to normal cellular protection from oxidative stress and supporting thyroid hormone metabolism, as noted by Dr. Rayman of University of Newcastle.

Alongside Vitamin E, selenium helps maintain antioxidant capacity and cellular integrity, supporting general health and wellbeing as part of normal physiological function.

This supplement is not intended to diagnose, treat, cure, or prevent any disease.

Life Extension brings a strong formulation focus to Welzo with an evidence-led approach to antioxidant support and nutrient synergy. This brand delivers a carefully designed triple form selenium alongside Vitamin E, a combination that broadens selenium coverage and enhances antioxidant capacity as described in their product formulation. The commitment to quality is evident in the non-GMO, vegetarian capsule format and adherence to good manufacturing practices, aligning with Welzo’s standards for safety and transparency.

This product’s capability to provide three selenium sources—Se-methyl L-selenocysteine, L-selenomethionine, and sodium selenite—together with Vitamin E offers a distinctive, product-specific profile that supports consistent intake and absorption. Our medical team has reviewed this approach for compliance with Welzo’s testing and quality expectations, emphasising purity and potency through our rigorous testing protocols. our medical team and our rigorous testing protocols support our confidence in this brand’s suitability for this supplement.

Welzo chose Life Extension because their formulation focus, manufacturing standards, and clear quality signals provide reliable value and reassurance for customers seeking a scientifically structured selenium supplement.