Magnesium supplements can be taken at any time of day, but it’s recommended to take them with food to reduce the potential for digestive upset [
1].
Magnesium needs vary by age and gender. Here is the recommended dietary allowance (RDA) for magnesium [
2]:
Males 14-18 years: 410 mg/day
Males 19–30 years: 400 mg/day
Males 31+ years: 420 mg/day
Females 14-18 years: 360 mg/day (400 mg/day during pregnancy)
Females 19–30 years: 310 mg/day (350 mg/day during pregnancy)
Females 31+ years: 320 mg/day (360 mg/day during pregnancy)