NOW Supplements, Potassium Citrate Powder, Supports Electrolyte Balance and NormPure Powder Supports Electrolyte Balance and Normal pH Proper Muscular Contraction GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation) Packaged in the USA by a family owned and operated company since 1968 Potassium is an essential mineral that is widely distributed among food sources, with especially high levels present in fruits and vegetables. Potassium is critical for the maintenance of normal whole-body and cellular fluid levels, as well as for the maintenance of acid-base balance.* It is also necessary for proper muscle contraction, the maintenance of healthy heart function, and for the transmission of nerve impulses.* Potassium Citrate is a well absorbed and highly bioavailable form of potassium. Natural color variation may occur in this product. This product is sold by weight not volume. Payment DetailsWe currently accept payment via PayPal only. Once payment is cleared, we will dispatch your shipment within 1-3 business days. Please refer to the "Shipping" tab for more information regarding shipping speed to your destination.Return PolicyAs our valued customer, we will do our best to make sure the product you receive arrives to you on time and as expected. If you are not satisfied with your purchase, please contact us within 30 days of receiving your order to process a return.