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SleepFoundation.org: Higher levels of magnesium in the body are associated with better sleep, longer sleep times, and less tiredness during the day. Studies of older adults also found that magnesium supplementation helped with falling asleep faster and protected against waking up earlier than intended

Note from Memorial Sloan Kettering: Supplements, antacids or laxatives containing magnesium can interact with many drugs, including antibiotics and medications for chronic diseases such as diabetes and heart disease. Magnesium levels in the body can also be affected by numerous prescription drugs, including the long-term use of drugs commonly used to treat digestive disorders. If you are under treatment for a medical condition, have a complicated medical history, or are in frail condition, you should discuss supplements or antacids that you are taking with your doctor.

Do Not Take if:

• You have kidney problems such as renal insufficiency or end-stage renal disease.
• You have gastrointestinal problems such as a bowel obstruction or other bowel disorders.
• You are taking antibiotics: Supplements, antacids and laxatives containing magnesium may reduce their effectiveness.
• You are a patient with heart block, a conduction disturbance in the heart.
• You are taking cardiovascular drugs for heart disease: Magnesium and other electrolyte levels should be monitored by your doctor.
• You are taking drugs for high blood pressure including calcium channel blockers: Magnesium-containing products could have an additive effect.
• You are taking sulphonylurea drugs for diabetes: Magnesium supplements or antacids may cause low blood sugar levels.

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