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Selenium

Guides and comparisons Multivitamins: how to compare daily vitamin & mineral formulas

Selenium on this shelf comes as 100 µg and 200 µg tablets and capsules, in different forms: sodium selenite, L-selenomethionine, selenium glycinate complex and selenium-enriched yeast. Labels give the selenium itself in µg per serving, next to its percentage of the nutrient reference value (55 µg), so a 200 µg tablet reads 364 %. Compare the µg per serving, the serving size and the unit price rather than the tablet count. The table below prices three products per 1,000 µg of declared selenium; it is a unit price for comparing labels, not a dose.

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Portion prices are calculated from the net contents. Portion sizes differ between products; this is not a dosing recommendation. Read the full ingredients and directions on the product label.

Price per 1,000 µg selenium = portion price ÷ declared selenium per portion (µg) × 1,000.

Selenium, 200mcg - 120 tablets Holland & Barrett Selenium, 200mcg - 120 tablets Albion Selenium, 200mcg - 90 vcaps Swanson Albion Selenium, 200mcg - 90 vcaps Selenium, 200mcg - 90 vcaps NOW Foods Selenium, 200mcg - 90 vcaps Selenium, 200mcg - 180 vcaps NOW Foods Selenium, 200mcg - 180 vcaps
Pack size 120 tablets 90 capsules 90 capsules 180 capsules
Main ingredients Selenium as sodium selenite; tablet Selenium as selenium glycinate complex; capsule Selenium as L-selenomethionine; vegetable capsule Selenium as L-selenomethionine; vegetable capsule
Label portion 1 tablets 1 capsules 1 capsules 1 capsules
Selenium per label portion 200 µg 200 µg 200 µg 200 µg
Pack price €3.99 €5.99 €8.99 €15.99
Price per portion €0.03 €0.07 €0.10 €0.09
Price per 1,000 µg selenium €0.17 €0.33 €0.50 €0.44
Allergen information See the manufacturer’s full allergen statement. See the manufacturer’s full allergen statement. See the manufacturer’s full allergen statement. See the manufacturer’s full allergen statement.
Certifications — — — —
Label information Label information Label information Label information Label information

Authorised EU Health Claim (HC-156 • Reg. (EU) 432/2012)

“Selenium contributes to the protection of cells from oxidative stress”

Conditions of use: The claim may be used only for food which is at least a source of selenium as referred to in the claim SOURCE OF [NAME OF VITAMIN/S] AND/OR [NAME OF MINERAL/S] as listed in the Annex to Regulation (EC) No 1924/2006.

A varied, balanced diet and a healthy lifestyle are important.

Prices include VAT for Ireland. Courier delivery: €6.99; free from €65.00. Estimated delivery: 2–4 working days.

Product facts checked: 2026-10-28.

Frequently asked questions

How do I read a selenium label in µg and percent?

Selenium is declared in micrograms (µg or mcg); 1,000 µg is 1 mg, so check the unit before comparing. The percentage is measured against a reference value of 55 µg, which is why a 200 µg serving shows 364 %. Compare the amount per serving and how many servings are in the pack.

Does the form of selenium change the number on the label?

No. Each label states the selenium in the product, whatever form it comes from, such as sodium selenite, selenium glycinate complex, L-selenomethionine or selenium-enriched yeast. The table prices the declared selenium and does not rank the forms.

Should I add up selenium from several products?

Yes. Multivitamins and combination products can contain selenium too, and the maximum on one label applies to that product only. Read the label's warnings, and ask a pharmacist or doctor if you take medicines or have a medical condition.