Cat & Dog - Aminophylline/Theophylline

Why has my veterinary surgeon prescribed this medicine?

Aminophylline or Theophylline is used to relieve coughing, wheezing, shortness of breath and troubled breathing. The medication works by opening up the air passages of the lungs and increasing the amount of air flowing into the lungs.

How does this medicine work?

Aminophylline induces bronchodilation of the smaller airways by inhibition of phosphodiesterase and antagonism of adenosine receptors. It has limited effect on larger airways.

How do I give this medication?

• Give this medication to your pet as directed by your veterinary surgeon. READ THE LABEL CAREFULLY.
• Give this medication half an hour before meals.
• Have water available for your pet.
• If the medicine is a liquid, measure the dose with reasonable care.
• Try to give this medication at about the same time each day.
• DO NOT give the pet more medicine than directed and DO NOT give more often than directed.
• Try not to miss giving any doses.
• Wash your hands after handling the medication.
• In case of accidental ingestion, seek medical advice immediately and show the package, leaflet or label to the physician.

What if I miss giving a dose?

Give the dose as soon as possible. If it is almost time for the next dose, skip the missed dose, and continue with the regular schedule. Do not give the pet two doses at once.

How do I store this medicine?

Keep this medicine out of reach of children. Store this medicine in a cool, dry place at room temperature. Store away from heat and direct sunlight. Do not store this medicine in the bathroom, near the kitchen sink or in damp places. The medicine may break down if exposed to heat or moisture.

Potential side effects

• Tell your veterinary surgeon if your pet is epileptic or if you think your pet may be pregnant.
• Your pet may experience some excitement and stomach upset, but these effects should disappear after a while. If these symptoms persist, contact your veterinary surgeon.
• Other symptoms may include nausea, vomiting, diarrhoea, excessive thirst and increased frequency of urination. Notify your veterinary surgeon if these are troublesome and continue.
• Other side effects may occur. If you notice anything unusual, contact your veterinary surgeon.

Possible drug interactions

• Make sure to tell your veterinary surgeon what other medication you are giving to your pet.
• Quite often your veterinary surgeon may prescribe two different medications, and a drug interaction may be anticipated. In this case, your veterinary surgeon may vary the dose and/or monitor your pet more closely.
• Drugs may interact such that they can cause an increased or decreased effect or side effects. Although drug interactions may occur, it does not mean that there is necessarily a high risk of any of these occurring.
• Contact your veterinary surgeon if your pet experiences any unusual reactions when different medications are given together.