Generic name: Magnesium citrate
Pregnancy & Lactation: Risk data not available
What is Colonx?
Magnesium citrate is used as a supplement to maintain adequate magnesium in the body.
Magnesium citrate is also used as a laxative to treat occasional constipation.
Magnesium citrate may also be used for purposes not listed in this medication guide.
Warnings
Ask a doctor or pharmacist if this medicine is safe to use if you have or have ever had:
- a sudden change in bowel habits that has lasted longer than 2 weeks;
- stomach pain, nausea, vomiting;
- if you are on a low-magnesium or low-sodium diet; or
- kidney disease.
Ask a doctor before using this medicine if you are pregnant or breastfeeding.
How should I use Colonx
Use Colonx (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.
Take with a full glass of water.
Shake the liquid medicine. Measure a dose with the supplied measuring device (not a kitchen spoon).
Magnesium citrate should produce a bowel movement within 30 minutes to 6 hours after you take the medicine.
Call your doctor if your symptoms do not improve after 7 days of treatment, or if the medicine produces no results. Not having a bowel movement after using a laxative may be a sign of a condition more serious than occasional constipation.
Store at cool room temperature away from moisture and heat.
Magnesium citrate is used when needed. If you are on a dosing schedule, take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next dose. Do not use two doses at one time.
Colonx 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 citrate and call your doctor at once if you have:
- no bowel movement within 6 hours after taking the medicine;
- pain with bowel movements, rectal bleeding;
- watery diarrhea, nausea, vomiting, severe stomach pain;
- painful or difficult urination;
- flushing (warmth, redness, or tingly feeling);
- a light-headed feeling, like you might pass out;
- weak or shallow breathing, slow heartbeats; or
- muscle weakness, increased thirst.
Common side effects may include:
- loose stools, diarrhea, stomach cramps;
- upset stomach;
- dizziness; or
- increased sweating.
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 Colonx?
Avoid taking any other medicines within 2 hours before or 2 hours after you take magnesium citrate. Laxatives can make it harder for your body to absorb other medicines you take by mouth.