Compare every Iodine product across UK retailers on Suppio, ranked by true value - price per active dose, not pack size. Prices refreshed daily.
Essential for thyroid hormone production
We rank Iodine by price per 150mcg - 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
Iodine is a chemical element and a mineral that the body needs to function. It is considered an essential nutrient, meaning the body cannot make it on its own and must get it from food or supplements.
Why it's used
It is primarily used to support the production of thyroid hormones. These hormones are chemicals made by the thyroid gland in the neck that control how the body uses energy, known as metabolism.
How it's made
Commercial iodine supplements are produced by extracting iodine from natural sources, such as seaweed or underground brine deposits. The extracted iodine is then combined with other elements to create a stable salt, which is processed into a powder and put into capsules or tablets.
What it typically costs
This ingredient is generally mid-range in price. This is because while the raw material is relatively abundant, the process of refining it into a safe, stable form for human consumption requires specific industrial standards.
Dosage by purpose
Purpose
Typical studied dose
Evidence
fibrocystic breast disease
70 to 90 micrograms per kilogram of body weight per day, or 1,500 to 6,000 micrograms per day
emerging
fetal development
150 or 200 micrograms per day
limited
severe population-level iodine deficiency
a single high dose of 120 mg to 960 mg
established
radiation-induced thyroid cancer
1 microgram per kilogram per day of parenteral iodine
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.
We rank Iodine by price per 150mcg - 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 Iodine prices updated?
Prices across our retailer network are refreshed at least daily.