Swanson Kelp Iodine Source comes in a 250-tablet format, with each tablet derived from Atlantic Kelp (Ascophyllum nodosum), standardised to 0.4% iodine. Each tablet provides 225 µg of iodine (150% NRV) alongside 56 mg of kelp, making it a straightforward way to include this essential mineral in your diet.
Iodine is a key mineral naturally present in seaweed, and kelp is one of the most concentrated plant-based sources available. Swanson is a well-established American supplements brand with a long-standing reputation for clean, clearly labelled formulations.
These unflavoured tablets are well suited to those following a plant-based diet, people who eat little or no seafood, or anyone looking to top up their iodine intake through a simple, single-ingredient supplement.





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