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Cantil Patient Information Including Side Effects

Brand Names: Cantil

Generic Name: mepenzolate (Pronunciation: me PEN zoe late)

What is mepenzolate (Cantil)?

Mepenzolate reduces stomach acid and helps control muscle spasms in the intestines.

Mepenzolate is used to treat peptic ulcers of the stomach. Mepenzolate does not help heal an ulcer.

Mepenzolate may also be used for purposes other than those listed in this medication guide.

What are the possible side effects of mepenzolate (Cantil)?

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

Stop using mepenzolate and call your doctor at once if you have any of these serious side effects:

  • urinating less than usual or not at all;
  • confusion, hallucinations;
  • unusual thoughts or behavior; or
  • fast, pounding, or uneven heartbeats.

Less serious side effects may include:

  • drowsiness, dizziness, headache;
  • blurred vision;
  • memory problems;
  • problems with balance or coordination;
  • nausea, vomiting, constipation, bloating; or
  • decreased 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.

Read the Cantil (mepenzolate bromide) Side Effects Center for a complete guide to possible side effects

What is the most important information I should know about mepenzolate (Cantil)?

You should not take this medication if you are allergic to mepenzolate, or if you have problems with urination, a blockage in your intestines, severe ulcerative colitis, glaucoma, or myasthenia gravis.

Before taking mepenzolate tell your doctor if you have diarrhea, numbness or tingling in your hands or feet, liver or kidney disease, ulcerative colitis, heart disease, high blood pressure, overactive thyroid, hiatal hernia, acid reflux disease, an enlarged prostate, asthma, or any allergies.

Mepenzolate can cause side effects that may impair your vision, thinking, or reactions. Be careful if you drive or do anything that requires you to be alert and able to see clearly.

Avoid drinking alcohol. It can increase some of the side effects of mepenzolate.

Avoid becoming overheated or dehydrated during exercise and in hot weather. Mepenzolate can decrease sweating, and you could develop heatstroke more easily.

Stop using mepenzolate and call your doctor at once if you stop urinating, or if you have hallucinations, confusion, unusual thoughts or behavior, or if you have fast, uneven, or pounding heartbeats.

Side Effects Centers

Cantil - User Reviews

Cantil User Reviews

Now you can gain knowledge and insight about a drug treatment with Patient Discussions.

Here is a collection of user reviews for the medication Cantil sorted by most helpful. Patient Discussions FAQs

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.

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