U.S. doctors online nowAsk doctors free
A 42-year-old female asked:

Can taking magnesium supplements cause decrease of calcium or potassium?my cramps and twitches got waay worse when taking magnesium supplements. why?

1 doctor answer1 doctor weighed in
Dr. Wazim Mohamed
16 years experience
Calcium-yes: Magnesium competes with calcium for absorption and can cause a calcium deficiency if calcium levels are already low
Created for people with ongoing healthcare needs but benefits everyone.
Last updated Sep 24, 2019


Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.