SUSTAINABLE WILD KELP FROM SCOTLAND: We sustainably harvest wild Ascophyllum nodosum from the Outer Hebrides. The kelp seaweed is dried gently by tunnel drier and milled to retain optimum nutrients. TESTED FOR PURITY & CONSISTENCY: We test each vegan iodine kelp batch for iodine levels and our formula is also FREE FROM HEAVY METALS other brands can contain 40% - 150% of the tolerable daily intake. POTENT FORMULA WITH SLOW-RELEASE IODINE: The iodine from our wild kelp tablets has a lower bioavailability (a positive with iodine) and is RELEASED AT A LOWER LEVEL & OVER A LONGER PERIOD. STABLE WITH LOW-PRESSURE TECH: Our sea kelp tablet is STABILISED IN A TEMPERATURE-CONTROLLED UK LAB TO PRESERVE NUTRIENTS with no need for too-high dosages.