Compare every Selenium product across UK retailers on Suppio, ranked by true value - price per active dose, not pack size. Prices refreshed daily.
Trace mineral with antioxidant properties, supports thyroid function
We rank Selenium by price per 55mcg - not by pack size - so a bigger tub with a worse price per dose can't outrank a smaller one that's actually cheaper.
What it is
Selenium is a trace mineral, which means it is a nutrient the body only needs in very small amounts to function correctly. It acts as an antioxidant, a substance that helps protect your cells from damage caused by unstable molecules called free radicals.
Why it's used
It is primarily used to support the thyroid, the gland in your neck that controls your metabolism. By protecting cells from oxidative stress, it helps maintain the overall health of the thyroid and the rest of the body.
How it's made
To create the supplement, selenium is combined with other elements to create a stable compound that the body can absorb. This resulting powder is then measured and packed into capsules or pressed into tablets for sale.
What it typically costs
This ingredient is generally mid-range in price. This is because while the raw mineral is not excessively rare, the process of creating a safe, stable, and bioavailable form for human consumption requires specific manufacturing standards.
Dosage by purpose
Purpose
Typical studied dose
Evidence
reducing inflammation in patients with metabolic diseases
200 micrograms per day
emerging
lowering total plasma cholesterol and non-HDL cholesterol
Suppio matches identical products across UK retailers by barcode, then ranks by price per active dose rather than sticker price. Value rankings only ever include listings Suppio has independently verified against the live retailer page - unverified data is shown on each product’s own page but excluded from ranking.
Prices across our retailer network are refreshed at least daily.
Trace mineral with antioxidant properties, supports thyroid function
How does Suppio calculate the best-value Selenium?
We rank Selenium by price per 55mcg - not by pack size - so a bigger tub with a worse price per dose can't outrank a smaller one that's actually cheaper.
Are these prices verified?
Suppio matches identical products across UK retailers by barcode, then ranks by price per active dose rather than sticker price. Value rankings only ever include listings Suppio has independently verified against the live retailer page - unverified data is shown on each product’s own page but excluded from ranking.
How often are Selenium prices updated?
Prices across our retailer network are refreshed at least daily.