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Cantil

Generic Name: mepenzolate (me PEN zoe late)
Brand Name: Cantil

Medically reviewed on December 15, 2017.

What is Cantil?

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

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

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

Important Information

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

Before taking Cantil 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.

Cantil 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 Cantil.

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

Stop using Cantil 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.

Before taking this medicine

You should not take this medication if you are allergic to Cantil, or if you have:

  • problems with urination;

  • a blockage in your intestines, paralytic ileus, severe ulcerative colitis, toxic megacolon;

  • glaucoma; or

  • myasthenia gravis.

If you have any of these other conditions, you may need a dose adjustment or special tests to safely take Cantil:

  • diarrhea (especially if you have a colostomy or ileostomy);

  • numbness or tingling in your hands or feet;

  • liver or kidney disease;

  • ulcerative colitis;

  • overactive thyroid;

  • congestive heart failure, a heart rhythm disorder, or coronary artery disease;

  • high blood pressure (hypertension);

  • hiatal hernia or acid reflux disease;

  • an enlarged prostate; or

  • asthma or any allergies.

FDA pregnancy category B. This medication is not expected to be harmful to an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant during treatment.

It is not known whether Cantil passes into breast milk or if it could harm a nursing baby. Do not take this medicine without telling your doctor if you are breast-feeding a baby.

Older adults may be more likely to have side effects from Cantil.

How should I take Cantil?

Take this medication exactly as prescribed by your doctor. Do not take it in larger amounts or for longer than recommended. Follow the directions on your prescription label.

Your doctor may occasionally change your dose to make sure you get the best results from this medication.

Cantil is usually taken 4 times each day, with meals and at bedtime. Follow your doctor's instructions.

Take this medicine with a full glass of water.

Taking this medication may slow down your digestion, causing a bloated feeling or other stomach discomfort. Talk with your doctor if you have concerns about this effect.

Store Cantil at room temperature away from moisture, heat, and direct light.

What happens if I miss a dose?

Take the missed dose as soon as you remember. If it is almost time for your next dose, wait until then to take the medicine and skip the missed dose. Do not take extra medicine to make up the missed dose.

What happens if I overdose?

Seek emergency medical attention if you think you have used too much of this medicine.

Overdose symptoms may include nausea, vomiting, dry mouth, blurred vision, dizziness, headache, dry and hot skin, trouble swallowing, and muscle weakness or stiffness.

What should I avoid while taking Cantil?

Cantil 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 Cantil.

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

Cantil side effects

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 Cantil 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.

See also: Side effects (in more detail)

What other drugs will affect Cantil?

The following drugs can interact with Cantil. Tell your doctor if you are using any of these:

This list is not complete and there may be other drugs that can interact with Cantil. Tell your doctor about all your prescription and over-the-counter medications, vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start a new medication without telling your doctor.

Further information

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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