Best Magnesium Selenium Supplements of 2025

Phoebe Cooper Avatar
Phoebe Cooper
Last Updated: 2 Feb 2025

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Magnesium Selenium Supplements are a combination of two essential minerals that are crucial for maintaining overall health and wellbeing. Magnesium is important for the proper functioning of the muscles, nerves, and heart, while selenium is a powerful antioxidant that helps protect the body against oxidative damage. These supplements are designed to provide a convenient and effective way to ensure that you are getting enough of these important minerals in your diet. They are available in various forms, including tablets, capsules, and powders, and can be easily incorporated into your daily routine.

At a Glance: Our Top Picks

Selenium 200mcg Capsules with No Additives Cover #TOP 1
Selenium 200mcg Capsules with No Additives
ftb score rating icon 9.9
Gloryfeel Selenium 365 Tablets - High Dosage Cover #TOP 2
Gloryfeel Selenium 365 Tablets - High Dosage
ftb score rating icon 9.8
Organic Selenium with Iodine and Silica Cover #TOP 3
Organic Selenium with Iodine and Silica
ftb score rating icon 9.6

Top 5 Magnesium Selenium Supplements

Selenium 200mcg Capsules with No Additives

Health Leads ...Working With Nature
0535
Selenium 200mcg Capsules with No Additives Cover
Selenium 200mcg x 90 Capsules (Magnesium Stearate Free)

Health Leads Selenium Capsules offer essential support for your thyroid gland, ensuring it functions optimally. Selenium is a key component of the body's antioxidant defence system, helping to protect your cells and tissues from damage. With no nasty additives, you can feel confident in what you're taking. Each vegetarian capsule contains selenium paired with organic rice flour, making it a convenient choice for those seeking a clean supplement. Manufactured in the UK, these capsules prioritise quality and purity.

What We Like
Supports thyroid function
Antioxidant protection
No nasty additives
Vegetarian-friendly
Manufactured in the UK
#TOP 2

Gloryfeel Selenium 365 Tablets - High Dosage

Gloryfeel
gf-selen
Gloryfeel Selenium 365 Tablets - High Dosage Cover
Selenium 365 Tablets - 220µg per Tablet - Premium Complex of Sodium Selenite & Selenium methionine - High Dosage & Without Magnesium Stearate - Supplements Made in Germany

Gloryfeel Selenium Tablets provide an impressive dosage of 220µg of selenium per tablet, ensuring you receive optimal levels of this essential nutrient. Their unique blend of sodium selenite and selenium methionine enhances absorption, making it easier for your body to utilise the supplement effectively. These tablets support your immune system and thyroid function, contributing to overall well-being. Being 100% vegan and free from unwanted additives means you can take them with confidence, knowing they are made with quality in mind.

What We Like
High dosage per tablet
Enhanced absorption formula
Supports immune and thyroid health
Vegan and additive-free
#TOP 3

Organic Selenium with Iodine and Silica

SE60
Organic Selenium with Iodine and Silica Cover
Organic Selenium 200mcg Plus Iodine and Silica - Selenium contributes to Normal Thyroid and Immune Function – 2 Month Supply - Whole Food Supplement - Certified Organic by Soil Association

The Earthier Selenium Supplement provides a potent blend of 200mcg of Selenium along with Iodine and Silica, all sourced from 100% certified organic whole-food extracts. Selenium is essential for supporting your immune system and maintaining normal thyroid function. Iodine plays a crucial role in the production of thyroid hormones, ensuring your thyroid operates effectively. This supplement is crafted from real foods, offering you a natural and preservative-free option to boost your health.

What We Like
100% certified organic ingredients
Supports immune and thyroid function
Natural food-based supplement
Vegan-friendly formulation
No preservatives or gluten

WFN Selenium Complex 200mcg - 365 Tablets

WORLD'S FOOD NUTRITION
66 g (Pack of 1)
WFN Selenium Complex 200mcg - 365 Tablets Cover
WFN Approved Selenium Complex - Selenium 200mcg - 365 Tablets (1-Year Supply) - with Sodium Selenite, Selenomethionine & Selenium Yeast - Vegan Supplement - Produced & Tested in Germany

The WFN Selenium Complex provides a high-dose blend of three bioavailable forms of selenium: Sodium Selenite, Selenomethionine, and Selenium Yeast. This combination supports your immune system and thyroid function, helping to maintain normal hair and nails while protecting your cells from oxidative stress. With 365 easy-to-swallow tablets in one can, you enjoy a daily supply of 200µg of elemental selenium for a whole year. As a vegan supplement, it is free from unnecessary additives, ensuring you receive only what you need.

What We Like
High-dose selenium complex
Supports immune and thyroid health
Annual supply of 365 tablets
Vegan and additive-free
Manufactured in Germany

Selenium 200 mcg Vegan Capsules by Raw Powders

RP-Selenm-60
Selenium 200 mcg Vegan Capsules by Raw Powders Cover
Selenium 200 mcg, 60 Vegan Capsules - Potent Antioxidant for Thyroid, Immune, Hair & Nail Health - High-Strength Selenium Supplement Support by Raw Powders

Raw Powders Selenium Capsules are designed to be easy on your stomach, as they contain no microcrystalline cellulose and less magnesium stearate. This means you can enjoy the benefits without digestive discomfort. This supplement acts as a powerful immune booster, supporting your body's natural defences and promoting thyroid health. Furthermore, it plays a crucial role in metabolism, helping to maintain healthy hair and nails. With its environmentally friendly packaging, you can feel good about your choice for both your health and the planet.

What We Like
Gentle on the stomach
Boosts immune system
Supports hair and nail health
Environmentally friendly packaging
Buying Guide Image
Editor's Notes

During our magnesium selenium supplement research, we found 46 magnesium selenium supplement products and shortlisted 5 quality products. We collected and analyzed 22,869 customer reviews through our big data system to write the magnesium selenium supplements list. We found that most customers choose magnesium selenium supplements with an average price of £7.21.

The magnesium selenium supplements are available for purchase. We have researched hundreds of brands and picked the top brands of magnesium selenium supplements, including Health Leads ...Working With Nature, Gloryfeel, Earthier, WORLD'S FOOD NUTRITION, Raw Powders. The seller of top 1 product has received honest feedback from 509 consumers with an average rating of 4.9.

Written by
Phoebe Cooper Avatar

In 2000, Phoebe Cooper graduated from the University of London as a Pharmacist. She practiced as a Pharmacist for the better part of 2 decades. Phoebe says she has worked in the majority of health sectors and has sufficient accumulated knowledge and experience. In her practice, Phoebe published a series of eBooks, one of which is titled "Good Health Good Living."