Font Size

Medications and Drugs

Brand Names: Sulfamag

Generic Name: magnesium sulfate injection (Pronunciation: mag NEE see um SUL fate)

What is magnesium sulfate injection (Sulfamag)?

Magnesium is a naturally occurring mineral. Magnesium is important for many systems in the body especially the muscles and nerves.

Magnesium sulfate injection is used to used to control low blood levels of magnesium (hypomagnesemia). Magnesium sulfate injection is also used for pediatric acute nephritis and to prevent seizures in severe pre-eclampsia, eclampsia, or toxemia of pregnancy.

Magnesium sulfate injection may also be used for purposes other than those listed in this medication guide.

What are the possible side effects of magnesium sulfate injection (Sulfamag)?

Side effects with magnesium sulfate injection are not common. Serious side effects include:

  • an allergic reaction (shortness of breath; closing of the throat; hives; swelling of the lips, face, or tongue; rash; or fainting);
  • heart disturbances;
  • breathing difficulties;
  • poor reflexes;
  • confusion, extreme tiredness or weakness;
  • low body temperature;
  • severe headache;
  • fainting;
  • rash or flushing;
  • vision problems; or
  • nausea or vomiting.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088. You may report side effects to FDA at 1-800-FDA-1088.

What is the most important information I should know about magnesium sulfate injection (Sulfamag)?

Magnesium sulfate injection should be administered as an injection into a muscle or intravenously by a healthcare provider. It should be administered in a clinical setting where an emergency situation can be handled properly.

Report Problems to the Food and Drug Administration

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

Pill Identifier Tool

Need help identifying pills and medications?
Use the pill finder tool on RxList.