Potassium iodine, and organic compaounf comes in the form of a white salt. Potassium Iodine is produced industrially and also occurs naturally in kelp. Most internet sellers acquire Potassium Iodine originating from kelp or unknown and unregistered sources, due to cost availability concerns. Potassium Iodine manufactured form kelp is well documented to be lower quality and may contain higher toxicity level because kelp grows in the ocean. Art Pharma (copyright) sources Potassium Iodine form a North American partner. Potassium Iodinewe use to manufacture our Natural Health products (NHPs) is also USP grade. Never sources or imported from China, Japan, or Russia nor from unknown or undocumented manufacturers.