Theophylline Extended-Release Tablets for Dogs and Cats
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Theophylline Extended-Release Rx

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Theophylline (Generic) Extended-Release Tablets for Pets

What is extended release theophylline?

Extended-release theophylline is a medication for heart disorders and asthma in pets and is especially used in cats. It works by relaxing the airways and by inhibiting the release of inflammation causing mast cells.

What else should you know about theophylline:

Theophylline can cause nausea, vomiting, headache, and insomnia. Signs of toxicity should be reported to your pet's veterinarian right away and they include persistent vomiting, cardiac arrhythmias, and seizures. Theophylline is a medication that will likely require blood level monitoring so it is crucial for you to keep all appointments with your pet's veterinarian.

You can find a Client Information Sheet which provides a summary of information about Theophylline Tablets for Pets by following the link below:

Theophylline Client Information Sheet*


If you have questions or concerns about Theophylline Tablets, or conditions related to its use, contact your pet's veterinarian or pharmacist.


*This link opens in a new window.

Theophylline's Drug Label for veterinary reference opens in a new window.