Theophylline Side Effects

Nausea, headaches, and insomnia are some of the most common side effects reported with theophylline. Side effects of this medicine are, in most cases, minor and either don't require medical attention or can easily be treated. However, a number of theophylline side effects are more serious and should be reported immediately to your healthcare provider. Among these more serious side effects are persistent vomiting, worsening breathing problems, and seizures.

 

An Introduction to Theophylline Side Effects

As with any medicine, there are possible side effects with theophylline. However, not everyone who takes the medication will experience side effects. In fact, most people tolerate theophylline well. When side effects do occur, in most cases they are minor and either require no treatment or can easily be treated by you or your healthcare provider.
 
(This article covers many, but not all, of the possible side effects with theophylline. Your healthcare provider can discuss a more complete list of theophylline side effects with you.)
 

Common Side Effects With Theophylline

Theophylline has been studied thoroughly in clinical trials. In these studies, the side effects that occur in a group of people taking the drug are documented and are then compared to side effects that occur in another group of people not taking the medication. In these studies, some of the most common theophylline side effects included:
 

Side Effects of Theophylline to Report

There are a number of side effects with theophylline that you should report immediately to your healthcare provider. These include but are not limited to:
 
  • Worsening breathing problems
  • Persistent vomiting
  • Irregular heart rhythms (arrhythmias)
  • Seizures
  • Signs of an allergic reaction, including unexplained rash, hives, itching, unexplained swelling, wheezing, or difficulty breathing or swallowing.
     
(Theophylline Side Effects Continued: Page 2)
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Written by/reviewed by: Kristi Monson, PharmD; Arthur Schoenstadt, MD
Last reviewed by: Kristi Monson, PharmD;