NOW Foods Selenium helps bolster antioxidant defenses and thyroid health, delivering a steady boost to immune function and everyday well being. Using the highly bioavailable L-selenomethionine form, it supports sturdy antioxidant enzymes and is backed by NOW Foods' decades of quality and clarity.

Benefits & Features:

• Supports antioxidant protection for cells.
• Promotes immune function via selenoproteins to support immune activity
• Aids thyroid hormone metabolism for balanced energy and steady metabolism throughout the day
• Manufactured in a GMP facility in the USA and certified Kosher and Halal, this selenium supplement blends clean ingredients for reliable daily use and lasting peace of mind
• Perfect as part of daily nutritional supplements, especially alongside vitamin D supplement choices for overall wellness

NOW Foods has stood at the heart of affordable, transparent supplements since 1968, earning trust through rigorous quality checks and clear labeling. This selenium supplement uses the highly bioavailable L-selenomethionine form, known for strong absorption. Made in the USA in a GMP facility, it's vegan, non-GMO, and Kosher and Halal certified, with careful allergen statements for peace of mind. A dependable choice for daily nutritional supplements that fit into busy, health-minded lives.

Selenium (as L-Selenomethionine)

• GTIN: 733739014863
• Manufacturer: NOW Foods
• Size: 180 Capsules
• Categories: Best SellersMinerals SupplementsNOW Foods SupplementsSelenium Supplements & VitaminsSubscribe & Save Products
• 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 a meal. Store in a cool, dry place after opening. For adults only. Consult a physician if pregnant/nursing, taking medication, or have a medical condition. Persons living in areas of high soil selenium, such as the Dakotas, should consult a physician prior to use. Keep out of reach of children.

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 (L-Selenomethionine Form)

Selenium is an essential trace mineral that helps with normal antioxidant defences and supports immune function, and supports thyroid health.

This form, L-selenomethionine, offers high bioavailability and is the source used in this supplement to provide selenium in a readily utilised form [for daily use].

What Does Selenium Do?

Selenium takes part in antioxidant enzyme systems and supports normal immune cell function and thyroid hormone metabolism, contributing to overall maintenance of normal physiology.

Dr. Barchielli from the University of Basel found that selenium supplementation boosts immune cell activity and supports antioxidant enzyme function, aligning with EFSA and NHS guidance on nutrient roles.

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

NOW Foods is Welzo’s go‑to for Selenium because this brand blends decades of family‑run heritage with a stubborn commitment to quality and openness. Since 1968 NOW Foods has earned a solid standing in the industry for thorough product testing, clear labelling, and a mission to deliver evidence‑based supplements, which lines up with our focus on reliability and empowering consumers. Production happens in the USA within GMP certified facilities, and the formulation carries Kosher and Halal certifications, showing broad regulatory compliance and accessible quality standards. This steady quality philosophy is backed by their routine testing for purity, potency and safety, a cornerstone of our selection criteria.

Welzo’s vetting process prioritises brand credibility, manufacturing craftsmanship, and third‑party assurance. We also evaluate whether a brand’s practices line up with our safety, traceability and consumer trust standards, consulting with Welzo's healthcare professionals here and grounding decisions in the standards we enforce.

This brand is particularly well suited for Selenium due to its use of the highly bioavailable L‑selenomethionine form and a 200 mcg dose that supports antioxidant enzymes and thyroid health as part of general well‑being. Choosing NOW Foods for this product reflects our commitment to a dependable, evidence‑led partner that consistently meets high quality benchmarks and provides clear, verifiable sourcing.