Compare every Kelp product across UK retailers on Suppio, ranked by true value - price per active dose, not pack size. Prices refreshed daily.
Natural source of iodine and trace minerals from seaweed
We rank Kelp by price per gram of active ingredient - not by pack size - so a bigger tub with a worse price per dose can't outrank a smaller one that's actually cheaper.
Kelp is a type of large brown seaweed that grows in the ocean. It is used in supplements as a natural source of iodine, which is a mineral the body needs to function, and other trace minerals, which are minerals required by the body in very small amounts.
It is primarily used to support the thyroid gland, which uses iodine to regulate metabolism. Because it is a whole-food source, it provides these essential minerals in a form that occurs naturally in the environment.
The seaweed is harvested from the ocean and then thoroughly cleaned to remove salt and debris. It is dried and ground into a fine powder, which is then either put directly into capsules or pressed into tablets.
This ingredient is generally mid-range in price. This is because the cost of harvesting and processing raw seaweed from the ocean is more involved than producing synthetic minerals, but there is still a steady global supply.
| Purpose | Typical studied dose | Evidence |
|---|---|---|
| treating iodine deficiency | 1 to 1.6 grams per day | limited |
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.
Natural source of iodine and trace minerals from seaweed
We rank Kelp by price per gram of active ingredient - not by pack size - so a bigger tub with a worse price per dose can't outrank a smaller one that's actually cheaper.
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.