Selenium Synergy is a selenium supplement that helps support antioxidant defenses and immune health through a highly bioavailable methylselenocysteine blend. The star ingredient, methylselenocysteine, is well absorbed and helps strengthen the body's antioxidant action. This brand brings decades of science driven nutrition and strong quality standards to this reliable daily support.

Available Sizes & Variants:

60 Capsules selenium supplement - convenient daily dose for ongoing support

Benefits & Features:

• Supports antioxidant protection with highly bioavailable selenium.
• Methylselenocysteine delivers well absorbed selenium for immune support.
• Glucoraphanin from broccoli seed extract adds extra antioxidant pathways.
• Vitamin E and riboflavin support metabolic synergy and cellular health.
• This formula is built by Jarrow Formulas, a trusted US brand with a long standing commitment to science based nutrition and clear ingredient sourcing, offering consistent quality.

Since its early days, Jarrow Formulas has built a reputation on science led nutrition and transparent quality. Selenium Synergy pairs methylselenocysteine with BroccoMax broccoli seed extract, standardised for glucoraphanin, to support antioxidant protection and cellular detoxification. The formulation is hypoallergenic, non GMO and gluten free, made under stringent manufacturing practices. By combining highly absorbable selenium with complementary plant based antioxidants, this product reflects a long standing commitment to reliability and real world daily support for busy, health minded individuals. If you’re exploring other supplements like vitamin d supplement or coq10, this product offers a focused, specialty option for selenium support.

(other) Cellulose, calcium phosphate, maltodextrin, magnesium stearate (vegetable source) and silicon dioxide. Capsule consists of bovine gelatin.

• GTIN: 790011130062
• Manufacturer: Jarrow Formulas
• Categories: Jarrow FormulasMineralsNew 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, every other day, or as advised by your healthcare professional. Take 2 capsules three times daily\, preferably with food. Increase the amount of fluids taken throughout the day.

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

The methylselenocysteine form of Selenium is a trace element essential for normal body function and is recognised for its part in antioxidant processes and immune support.

This form is noted for great bioavailability and is paired with additional synergistic nutrients to support selenium’s functional roles in the body.

What Does Selenium (Methylselenocysteine) Do?

Selenium helps with antioxidant defence and immune function and is involved in thyroid health as part of normal metabolism.

Dr. Rayman from the University of Cambridge found that selenium is essential for antioxidant defence and immune function, with evidence particularly relevant to populations with low dietary intake.

Vitamin E and riboflavin included in this formulation may support the overall antioxidant system and metabolic synergy.

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

We selected Jarrow Formulas Selenium Synergy as a partner because this brand demonstrates a long-standing commitment to scientifically informed formulation and reliable manufacturing. Compared with other suppliers, Jarrow Formulas is a well-established US-based company with a multi-decade track record known for focus on bioavailability and product quality, and it adheres to Good Manufacturing Practices (GMP) with regulatory oversight as a dietary supplement manufacturer. This gives our medical team confidence in the brand’s stability and consistency across batches, which is essential for daily use products.

A key differentiator is their integration of methylselenocysteine with BroccoMax® to support a highly bioavailable selenium blend alongside glucoraphanin, vitamin E and riboflavin in Selenium Synergy. This alignment with scientifically designed, synergistic ingredients helps explain why we chose Jarrow Formulas over competitors. Our team evaluated the brand through Welzo’s proven vetting process and prioritised consistency, transparency and manufacturing standards, guided by Welzo's healthcare professionals and our commitment to the certifications we require.

Together, this brand and product meet our standards for quality, safety and reliability, making the combination a strong fit for a clinically mindful supplement routine.