Se-Methyl L-Selenocysteine capsules deliver a premium selenium supplement that supports immune health and thyroid function through the bioactive Se-Methyl form, absorbed efficiently for daily wellbeing. This plant-based capsule delivers the key active ingredient in a convenient daily dose, designed for easy incorporation into your routine. Life Extension backs its products with stringent quality practices, helping you trust what you're taking.

Available Sizes & Variants:

90 capsules - a standard bottle for daily selenium support.

Benefits & Features:

• Delivers rapid absorption for a high quality selenium supplement.
• Supports immune function and antioxidant defenses by supplying Se-Methyl L-Selenocysteine, the star active ingredient that becomes part of selenoproteins, the selenium supplement protecting cells.
• Daily use is designed with food to aid absorption.
• Non-GMO, gluten-free and manufactured to GMP standards, Life Extension maintains rigorous quality controls and independent testing to ensure this selenium supplement's purity and potency in every bottle.
• Each capsule is vegetarian, making it suitable for various dietary preferences while providing a dependable daily selenium intake as a selenium supplement that supports overall micronutrient balance throughout the day.

Life Extension is renowned for purity and manufacturing excellence, with GMP compliant facilities and routine independent testing. Se-Methyl L-Selenocysteine is an organic selenium compound found in garlic and broccoli, and this vegetarian capsule offers a straightforward daily intake. The 200 mcg daily dose supports selenoprotein activity and immune function. It's designed to fit seamlessly into a wellbeing routine.

Selenium (as Se-Methyl L-Selenocysteine)

• GTIN: 737870187998
• Manufacturer: Life Extension
• Categories: Life ExtensionNew Arrivals
• 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 capsule daily with food, or follow your healthcare practitioner's advice. 1 chewable tablet per day. Recommended daily dose should not be exceeded. This product should not be used as a substitute for a varied diet.

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

The Active Ingredient Is: Selenium (Se-Methyl L-Selenocysteine)

Selenium is a trace element supplied here as Se-Methyl L-Selenocysteine, an organic selenium compound found in plant foods such as garlic and broccoli. This form is readily absorbed and incorporated into selenoproteins that support normal cellular function. This capsule deliverable represents the key active ingredient for daily selenium nutrition.

This form is derived from a plant-based source and is associated with the body’s production of selenoproteins, contributing to normal physiological roles related to antioxidant defences and thyroid function.

What Does Selenium Do?

Selenium plays a role in the activity of selenoproteins that participate in antioxidant protection and support immune and thyroid system processes, in line with EFSA and NHS messaging. The mechanism involves incorporation into proteins that help maintain normal cellular function and hormone activity.

Dr. Rayman of the University of Aberdeen found that selenium supports immune function and thyroid activity through selenoprotein pathways, reinforcing its role in normal bodily processes.

Life Extension stands out for manufacturing excellence and a genuinely proven commitment to quality that makes them our trusted partner for Se-Methyl L-Selenocysteine. This brand has long been recognised for sticking to GMP standards and carrying out really thorough internal and external quality checks, with extensive audits that back up consistent purity and potency across its product ranges.

Our Welzo team evaluated Life Extension through a careful process, emphasising manufacturing integrity, stability, and traceability. The brand’s well established reputation for high-quality manufacturing, alongside ongoing third-party verification checks, aligns with our our supplement quality standards. This helps us offer products that meet strict industry benchmarks while keeping consumer trust.

The product fit is pretty solid: Life Extension’s Se-Methyl L-Selenocysteine benefits from a brand philosophy focused on purity and bioavailability, with vegetarian capsules and clear inactive ingredient lists. This makes Life Extension a great match for a selenium supplement that supports everyday wellness needs. Our vetting process, supported by our expert team of doctors, nurses and nutritionists, reinforces why Life Extension earned a Welzo selected status for this formulation.