1 What is Quarzan?

Brand: Quarzan

Generic: Clidinium

Quarzan is an anticholinergic drug, used with other medications to treat symptoms of peptic ulcer. This medication helps to inhibit the excessive production of gastric acids, which contribute to the development of ulcerations in the stomach.


Read your medication guide and follow your doctor’s prescription at all times.

  • Take Quarzan orally/ by mouth after meals or with food, 3- 4 times a day per doctor’s prescription. If you are prescribed to take this medication 4 times a day, take your last dose at your sleeping hour.
  • The dosage depends on your medical condition or treatment response. Do not adjust your dose without your doctor’s recommendation.
  • Increase your fluid intake while on this medication to prevent heat stroke.
  • Avoid alcohol intake and activities that require mental alertness (i.e. driving, operating machinery) because this medication can cause dizziness.
  • Continue taking Quarzan on a regular schedule (same time of the day). Do not stop taking this medication abruptly without consulting your doctor.

Inform your doctor immediately if your condition aggravates or does not improve.

Take your missed dose as soon as possible. However, make sure that the time interval between the missed and the next dose is not too close. Otherwise, stick with the regular schedule and leave out the missed dose. Do not double dose to cover up a missed dose. Record your missed dose and inform your doctor immediately if you missed several doses.


Quarzan may interact with:

  • Amantadine
  • Quinidine
  • Antihistamine (i.e. diphenhydramine)
  • Decongestants (i.e. phenylpropanolamine, phenylephrine, pseudoephedrine)
  • Phenothiazines (i.e. chlorpromazine)
  • Tricyclic antidepressants (i.e. amitriptyline) and
  • Digoxin

Some drugs may either lessen the beneficial effects or worsen the side effects of Quarzan. Likewise, Quarzan may make some drugs less efficient or intensify their side effects.

Make sure to inform your doctor about all other drugs you are currently taking or using (prescribed and non-prescribed medications including vitamins, minerals, and herbal products) to check for possible drug interaction with Quarzan.

Never alter the doses of other medications while on Quarzan _ neither stop nor start any medicine without the doctor’s recommendation.

Side Effects:

There are no side effects known aside from a possible allergic reaction in people who have previous or unknown hypersensitivity to the drug.

Watch out for signs of allergic reactions such as:

  • Rash
  • Itching
  • Swelling


Before taking Quarzan, tell your health care provider if you have/are:

  • Pregnant, planning to get pregnant or currently breastfeeding a baby (It is not known if Quarzan can harm the unborn child or if it can pass through breast milk that may harm the nursing child. The risks and benefits of using this medication during pregnancy must be discussed well with your doctor.)