warnings

What is the most important information I should know about Magnesium Sulfate (Injection)(Injectable,Intravenous)?

Tell your doctor if you drink alcohol or caffeine drinks regularly, if you smoke, or if you use any street drugs. These factors can affect the way magnesium sulfate injection works in your body.

If possible before you receive magnesium sulfate, tell your doctor if you have:

kidney disease;
heart disease;
a stomach or intestinal disorder; or
if you are dehydrated.

You should not use magnesium sulfate if you are pregnant. It could harm the unborn baby. Use effective birth control, and tell your doctor if you become pregnant during treatment.

Magnesium sulfate can pass into breast milk and may harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.

In an emergency situation it may not be possible to tell your caregivers if you are pregnant or breast feeding. Make sure any doctor caring for your pregnancy or your baby knows you have received this medication.

Side Effects

What are the side effects of Magnesium Sulfate (Injection)(Injectable,Intravenous)?

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Tell your caregiver right away if you have:

feeling like you might pass out;
sweating, anxiety, cold feeling;
flushing (warmth, redness, or tingly feeling);
weak or shallow breathing;
extreme drowsiness, feeling very weak; or
numbness or tingly feeling around your mouth, muscle tightness or contraction, overactive reflexes.

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.

Pregnancy & Breastfeeding

Can I take Magnesium Sulfate (Injection)(Injectable,Intravenous) if I’m pregnant or breastfeeding?

Positive evidence of risk

Based on FDA pregnancy categories

You should not use magnesium sulfate if you are pregnant. It could harm the unborn baby. Use effective birth control, and tell your doctor if you become pregnant during treatment.

Magnesium sulfate can pass into breast milk and may harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.

Dosage Guidelines & Tips

How to take Magnesium Sulfate (Injection)(Injectable,Intravenous)?

Use Magnesium Sulfate (Injection)(Injectable,Intravenous) exactly as directed on the label, or as prescribed by your doctor. Do not use in larger or smaller amounts or for longer than recommended.

Magnesium sulfate is injected into a muscle or into a vein through an IV. You will receive this injection in a clinic or hospital setting.

Your breathing, blood pressure, oxygen levels, and other vital signs will be watched closely while you are receiving magnesium sulfate.

What should I do if I missed a dose of Magnesium Sulfate (Injection)(Injectable,Intravenous)?

Since magnesium sulfate is given by a healthcare professional, you are not likely to miss a dose.