Generic name: Magnesium oxide
Pregnancy & Lactation: Risk data not available
What is Phillips' Cramp-Free?
Magnesium is a naturally occurring mineral. Magnesium is important for many systems in the body especially the muscles and nerves.
Magnesium oxide is used as a supplement to maintain adequate magnesium in the body.
Magnesium oxide is also used as an antacid to treat indigestion, or as a laxative to relieve occasional constipation.
Magnesium oxide may also be used for purposes not listed in this medication guide.
Warnings
You should not use magnesium oxide if you are allergic to it.
Ask a doctor or pharmacist if it is safe for you to use this medicine if you have other medical conditions, especially:
- kidney disease;
- heart disease;
- nausea, vomiting;
- a blockage in your intestines;
- low levels of calcium in your blood; or
- a sudden change in bowel habits for 2 weeks or longer.
It is not known whether magnesium oxide will harm an unborn baby. Ask a doctor before using this medicine if you are pregnant.
It is not known whether magnesium oxide passes into breast milk or if it could affect a nursing baby. Ask a doctor before using this medicine if you are breast-feeding.
Do not give this medicine to a child without medical advice.
Magnesium oxide should not be given to a child younger than 6 years old.
How should I use Phillips' Cramp-Free
Use Phillips' Cramp-Free (Oral) 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.
Use 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.
Take this medicine with a full glass of water.
When using this medicine as a laxative, it may be best to take your dose at bedtime.
Magnesium oxide may be taken with food if it upsets your stomach.
Call your doctor if your symptoms do not improve after 7 days of treatment, or if symptoms get worse.
Store at room temperature away from moisture and heat.
Since magnesium oxide is sometimes used when needed, you may not be on a dosing schedule. If you are on a schedule, take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to make up the missed dose.
Phillips' Cramp-Free side effects
Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Stop using magnesium oxide and call your doctor at once if you have:
- rectal bleeding;
- coughing up blood or vomit that looks like coffee grounds;
- bloody or tarry stools; or
- no bowel movement after using magnesium oxide as a laxative.
Common side effects may include:
- diarrhea; or
- upset stomach.
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.
What other drugs will affect Phillips' Cramp-Free?
Magnesium oxide can make it harder for your body to absorb other medicines you take by mouth. Avoid taking other medicines within 2 hours before or 2 hours after you take magnesium oxide. You may need to wait 4 hours to take your other medicines after taking magnesium oxide. Ask your doctor how to best schedule your medications.