Pure Encapsulations Potassium-aspartate offers support for nerves, heart, muscles and the metabolism. Potassium plays a critical role in the transmission of electrical impulses in the heart and supports healthy blood flow. Potassium also plays important roles in muscle function, mood, cranial vessel comfort and maintaining acid/alkaline balance. Potassium supports alkaline balance, bone cell function and bone mineralization in part by supporting calcium absorption and healthy bone resorption. Recommended use: 1 capsule, 1-2 times daily with meals, or as directed by a healthcare professional.