Potassium 99mg 100 Caplets by Puritan's Pride is a dietary supplement that provides a daily dose of potassium, an essential mineral. Potassium plays a role in maintaining heart health, supporting muscle and nerve function, and regulating fluid balance in the body. This supplement provides 99mg of potassium per serving in the form of easy-to-swallow caplets. It is recommended to be taken daily as part of a balanced diet. It is important to consult a healthcare provider before taking this or any other supplement, especially if you have any medical conditions or are taking any medications.