MSD Manual

Please confirm that you are not located inside the Russian Federation

honeypot link

Hypermagnesemia (High Level of Magnesium in the Blood)

By

James L. Lewis III

, MD, Brookwood Baptist Health and Saint Vincent’s Ascension Health, Birmingham

Last full review/revision Apr 2020| Content last modified Apr 2020
Click here for the Professional Version

In hypermagnesemia, the level of magnesium in blood is too high.

Hypermagnesemia is uncommon. It usually develops only when people with kidney failure Overview of Kidney Failure Kidney failure is the inability of the kidneys to adequately filter metabolic waste products from the blood. Kidney failure has many possible causes. Some lead to a rapid decline in kidney function... read more are given magnesium (Epsom) salts or take drugs that contain magnesium (such as some antacids or laxatives).

Hypermagnesemia may cause

  • Muscle weakness

  • Low blood pressure

  • Impaired breathing

When hypermagnesemia is severe, the heart can stop beating.

The diagnosis is based on blood tests indicating that the magnesium level is high.

Treatment of Hypermagnesemia

  • Calcium gluconate

  • Diuretics

People with severe hypermagnesemia are given calcium gluconate by vein (intravenously).

Diuretics (particularly if given intravenously) can be given to increase the kidneys’ excretion of magnesium. However, if the kidneys are not functioning well or if hypermagnesemia is severe, dialysis Dialysis Dialysis is an artificial process for removing waste products and excess fluids from the body, a process that is needed when the kidneys are not functioning properly. There are a number of reasons... read more Dialysis is usually needed.

NOTE: This is the Consumer Version. DOCTORS: Click here for the Professional Version
Click here for the Professional Version
Others also read
Download the Manuals App iOS ANDROID
Download the Manuals App iOS ANDROID
Download the Manuals App iOS ANDROID

Test your knowledge

Endocrine Glands
The endocrine system is made up of glands and organs that regulate and control many bodily functions by producing and secreting hormones, chemicals that affect various bodily activities. Which of the following is known as the master gland because it helps regulate the function of many of the body’s endocrine glands?
Download the Manuals App iOS ANDROID
Download the Manuals App iOS ANDROID
Download the Manuals App iOS ANDROID

Also of Interest

Download the Manuals App iOS ANDROID
Download the Manuals App iOS ANDROID
Download the Manuals App iOS ANDROID
TOP