SelenoExcell Selenium Yeast is a selenium supplement built to support immune function and offer antioxidant protection, helping you stay on top of daily health with ease. The star ingredient, selenomethionine, is chosen for strong uptake and tissue retention, and our brand's milestones show decades of commitment to quality. Natural Factors is known for pharmaceutical-grade quality, ISURA certification, and thorough testing, ensuring every bottle meets high safety and purity standards.

Available Sizes & Variants:

90 Capsules - convenient daily capsule form for steady selenium support.

Benefits & Features:

• Supports immune function for everyday resilience.
• The star ingredient is selenomethionine, helping absorption in the body.
• Designed for higher bioavailability, this organic selenium in yeast builds a tissue reserve that supports antioxidant defence and daily resilience.
• Quality you can trust, with ISURA testing that keeps this selenium supplement among the top selenium supplements.
• Fits neatly into a daily routine as part of a vitamin d supplement plan for balanced nutrition.

Natural Factors' SelenoExcell selenium yeast comes from a patented fermentation process, delivering an organically bound selenium that tissues retain more readily than inorganic sources. The company operates with pharmaceutical-grade quality and ISURA certification, testing for hundreds of contaminants to keep products safe. The yeast-based selenium includes selenomethionine and other naturally occurring compounds, creating a reliable selenium reserve that supports daily wellbeing with a longstanding commitment to transparent sourcing and rigorous quality, a pairing option many users explore with probiotics.

Microcrystalline cellulose, gelatin capsule (gelatin, purified water), magnesium stearate (vegetable grade).

• GTIN: 68958016757
• Manufacturer: Natural Factors
• Categories: MineralsNatural FactorsNew ArrivalsSelenium 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 capsule daily or as directed. Take 1 vegetarian capsule 1-3 times daily or as directed by a qualified health care professional.

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

The Active Ingredient Is: Selenium (Selenomethionine Form)

Selenium is an essential trace element involved in a range of bodily processes. This product uses an organic selenium form produced in yeast through a fermentation process, resulting in a selenomethionine-containing form that is incorporated into bodily proteins.

This form provides a natural, yeast-derived source of selenium that can be retained in tissues more effectively than inorganic selenium forms, supporting reliable micronutrient availability.

What Does Selenium Do?

Selenium contributes to the assembly of selenoproteins which support antioxidant enzyme activity and help maintain normal cellular redox balance, in line with EFSA guidance. It also aids thyroid hormone metabolism, helping with the conversion of T4 to the active T3 form.

This source aligns with the body's normal biological use of selenium, with organic yeast-based selenium incorporated via the natural methionine pathway for bioavailability.

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

Why Natural Factors SelenoExcell Selenium Yeast is Welzo Selected. Natural Factors is a name we recognise for heritage and consistency in quality, built on a history of pharmaceutical grade standards and close collaboration with universities and research centres. This brand is respected for its rigorous approach to quality and safety, backed by ISURA certification that tests for hundreds of contaminants and supports confidence in the supply chain. Their comprehensive in‑house expertise, including naturopathic doctors, nutritionists and quality control specialists, ensures a scientifically grounded, quality‑focused culture that aligns with Welzo’s standards. This brand was evaluated by our medical team for compliance with our quality assurance criteria.

Why this brand over competitors comes from its clear commitment to purity, potency and traceability, demonstrated by pharmaceutical‑grade materials and robust third‑party testing practices. Natural Factors’ heritage as a vertically integrated manufacturer further supports reliability and consistency across batches, which is essential for a selenium yeast product like SelenoExcell. This brand’s expertise directly supports the product’s focus on bioavailability and safe, well‑controlled formulations, making Natural Factors particularly well‑suited for this supplement.