Bronchial Side Effects

Generic Name: guaifenesin / theophylline

Note: This document contains side effect information about guaifenesin / theophylline. Some of the dosage forms listed on this page may not apply to the brand name Bronchial.

Some side effects of Bronchial may not be reported. Always consult your doctor or healthcare specialist for medical advice. You may also report side effects to the FDA.

Applies to guaifenesin / theophylline: oral capsule, oral capsule liquid filled, oral elixir, oral liquid, oral syrup, oral tablet

Along with its needed effects, guaifenesin / theophylline may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor as soon as possible if any of the following side effects occur while taking guaifenesin / theophylline:

Less common or rare
  • Heartburn and/or vomiting
Symptoms of toxicity
  • Abdominal pain, continuing or severe
  • confusion or change in behavior
  • convulsions (seizures)
  • dark or bloody vomit
  • diarrhea
  • dizziness or lightheadedness
  • fast and/or irregular heartbeat, continuing
  • nervousness or restlessness, continuing
  • trembling, continuing

Some side effects of guaifenesin / theophylline may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

Less common
  • Fast heartbeat
  • headache
  • increased urination
  • nausea
  • nervousness
  • trembling
  • trouble in sleeping

More about Bronchial (guaifenesin / theophylline)

Consumer resources

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