Now Potassium Citrate Pure Powder is an essential mineral. Provides potassium for those with low levels of potassium to support nerve conduction, muscle contraction, heart and kidney function. Recommended Use: Take 1/4 level teaspoon 1 to 2 times daily in separate servings, or as directed by a healthcare professional. Take with food and at least 8 oz. of water or other beverage. Do not exceed 2 servings per day. Store in a cool, dry place after opening.