People with diabetes, intestinal disease, heart disease or kidney disease should not take magnesium before speaking with their health care provider. Overdose. Signs of a magnesium overdose can include nausea, diarrhea, low blood pressure, muscle weakness, and fatigue. At very high doses, magnesium can be fatal.

The benefits of magnesium supplementation in healthy individuals aren't clear, but Dr. Nassar says that taking a magnesium supplement every day likely isn't unsafe for most people. Just be sure you're not taking too much magnesium. The maximum dietary allowance for most adults is around 400 mg or less.

Magnesium glycinate is a highly bioavailable form of magnesium made from magnesium and the amino acid glycinate. It's effective for treating low magnesium levels, is well-tolerated, and is less likely to cause gastrointestinal side effects than other forms, such as magnesium oxide and magnesium sulfate.

Magnesium glycinate is considered to be the most effective type of magnesium for bettering sleep, as it may help relax both the nervous system and your muscles. This product doesn't include any other added ingredients and is suitable for those seeking a supplement for both sleep and general use.