Magnesium citrate is a dietary supplement that combines magnesium with citric acid. It is commonly used to help support digestive health and relieve constipation, as it has a mild laxative effect. Magnesium is an essential mineral that plays a crucial role in various bodily functions, including muscle and nerve function, blood sugar control, and bone health. This supplement is often available in powder or capsule form and can be taken with water. People may choose magnesium citrate to increase their magnesium intake, especially if they have a deficiency or experience symptoms like muscle cramps or fatigue.