Potassium chloride is a prescription medication used to treat and prevent low potassium levels due to poor dietary intake, certain diseases, or other drugs. Potassium chloride belongs to a group of drugs called electrolytes, which are compounds that help the body function normally.

This medication comes in tablet and capsule forms and may be taken multiple times a day with food and water.

This medication is also available in an injectable form to be given directly into a vein by a healthcare professional.

Common side effects of potassium chloride include nausea, vomiting, stomach discomfort or pain, and diarrhea.