NOW Foods - Potassium Chloride Powder - 227g. NOW Potassium Chloride is Pharmaceutical Grade. For adults only. Keep out of reach of children. - Sodium Free. Magnesium Carbonate (as flowagent). Not manufactured with yeast, wheat, gluten,soy, milk, egg, fish, shellfish or tree nut ingredients.Produced in a GMP facility that processes otheringredients containing these allergens.