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Medications and Drugs

Brand Names: Quarzan

Generic Name: clidinium (Pronunciation: cli DIN ee um)

What is clidinium (Quarzan)?

Clidinium reduces the secretions of certain organs in the body.

Clidinium helps to control conditions such as peptic ulcers that involve excessive stomach acid production.

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

What are the possible side effects of clidinium (Quarzan)?

If you experience any of the following serious side effects, stop taking clidinium and seek emergency medical attention:

  • an allergic reaction (difficulty breathing; closing of your throat; swelling of your lips, tongue, or face; or hives);
  • an irregular or fast heart rate;
  • rash or flushing; or
  • eye pain.

Other, less serious side effects may be more likely to occur. Continue to take clidinium and talk to your doctor if you experience

  • headache, dizziness, or lightheadedness;
  • weakness or nervousness;
  • blurred vision, large pupils, or sensitivity of the eyes to bright light;
  • nausea, bloating, heartburn, or constipation;
  • changes in taste;
  • difficulty urinating;
  • decreased sweating; or
  • nasal congestion, stuffiness, or a dry mouth.

Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome. You may report side effects to FDA at 1-800-FDA-1088.

What is the most important information I should know about clidinium (Quarzan)?

Use caution when driving, operating machinery, or performing other hazardous activities. Clidinium may cause dizziness, drowsiness, or blurred vision. If you experience dizziness, drowsiness, or blurred vision, avoid these activities.

Use alcohol cautiously. Alcohol may increase drowsiness and dizziness while you are taking clidinium.

Avoid becoming overheated in hot weather. Clidinium increases the risk of heat stroke because it causes decreased sweating.



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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