Generic name: bismuth subsalicylate (BIZ muth sub sa LISS i late)
Brand name: Bismarex, Bismatrol, Bismatrol Maximum Strength, Kaopectate, Kola-Pectin DS, Peptic Relief, Pepto-Bismol, Percy Medicine, Pink Bismuth, Soothe Caplets
Drug class: Antidiarrheals
What is Bismarex?
Bismarex may also be used for purposes not listed in this medication guide.
Do not give this medicine to a child or teenager with a fever, flu symptoms, or chickenpox.
Before taking this medicine
You should not use Bismarex if you are allergic to it, or if you have:
black or bloody stools;
a stomach ulcer;
bleeding problems; or
if you are allergic to salicylates such as aspirin, Doan's Extra Strength, Salflex, Tricosal, and others.
Do not give this medicine to a child or teenager with a fever, flu symptoms, or chickenpox. Salicylates can cause Reye's syndrome, a serious and sometimes fatal condition in children.
Ask a doctor or pharmacist if this medicine is safe to use if you have:
mucus in your stools; or
if you currently have a fever.
Ask a doctor before using this medicine if you are pregnant or breastfeeding.
Do not give this medicine to a child younger than 12 years old without medical advice.
How should I take Bismarex?
Use exactly as directed on the label, or as prescribed by your doctor.
Shake the oral suspension (liquid) before you measure a dose. Use the dosing syringe provided, or use a medicine dose-measuring device (not a kitchen spoon).
You must chew the chewable tablet before you swallow it.
Drink plenty of liquids while you are taking Bismarex.
Do not take more than 8 doses in one day (24 hours).
Call your doctor if you still have diarrhea after 2 days of using Bismarex.
This medicine can affect the results of certain medical tests. Tell any doctor who treats you that you are using Bismarex.
Store at room temperature away from moisture and heat. Do not freeze.
What happens if I miss a dose?
Since Bismarex is used when needed, you may not be on a dosing schedule. Skip any missed dose if it's almost time for your next dose. Do not use two doses at one time.
Do not take more than 8 doses per day.
What happens if I overdose?
Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.
What should I avoid while taking Bismarex?
Ask a doctor or pharmacist before taking other antacids or diarrhea medicine, or taking medicine that may contain a salicylate (such as aspirin, salsalate, magnesium salicylate, choline salicylate, diflunisal, Ecotrin, Tricosal, Trilisate, and others).
Bismarex side effects
Get emergency medical help if you have signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Stop taking Bismarex and call your doctor at once if you have:
changes in behavior with nausea and vomiting;
hearing loss or ringing in your ears;
diarrhea lasting longer than 2 days; or
worsened stomach symptoms.
Bismarex can cause you to have a black or darkened tongue. This is a harmless side effect.
Common side effects include:
dark colored stools.
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 Bismarex?
Ask a doctor or pharmacist before using Bismarex with any other medications, especially:
insulin or oral diabetes medications; or
More about Bismarex (bismuth subsalicylate)
- Side Effects
- During Pregnancy or Breastfeeding
- Dosage Information
- Drug Interactions
- En Español
- Drug class: antidiarrheals
Related treatment guides
Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
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