Atenolol is a beta-blocker used to treat certain heart conditions such as arrhythmias. It may also be used to lower blood pressure and treat enlarged hearts in cats.
For: Cats and Dogs
How it works: Atenolol is a beta-blocker that works by affecting the response to nerve impulses in certain parts of the body. As a result, the heart beats slower and decreases blood pressure. When your pet’s blood pressure is lowered, the amount of blood and oxygen to the heart is increased.
Dosage & Administration: Give this medication exactly as directed by your veterinarian. If you do not understand the directions ask the pharmacist or veterinarian to explain them to you. Atenolol can be given with or without food. Atenolol should be given with lots of water. not stop giving atenolol abruptly unless you are directed to do so by the veterinarian. Stopping abruptly may make the condition worse. Store atenolol at room temperature away from moisture and heat. Keep this medication away from children and pets.
Tips: Do not stop giving atenolol abruptly unless you are directed to do so by the veterinarian. Stopping abruptly may make the condition worse. Atenolol may cause drowsiness.
What happens if I miss a dose: Give the missed dose as soon as you remember during the same day. However, if you don¿t remember until the next day, skip the dose you missed and give only the next regularly scheduled dose. Do not give a double dose of the medication.
What happens if I overdose the pet: Seek emergency veterinary medical treatment. Symptoms of atenolol overdose include a slow heart beat, shortness of breath, fainting, dizziness, weakness, confusion, nausea and vomiting.
What should I avoid while using Atenolol: Atenolol may cause drowsiness. Tell the veterinarian your pet is taking atenolol prior to any surgery on the animal.
Possible side effects of Atenolol: If any of the following serious side effects occur, stop giving atenolol and seek emergency veterinary medical attention; an allergic reaction (difficulty breathing; swelling of the lips; tongue or face; hives), wheezing or shortness of breath; an unusually slow or irregular heart beat; leg pain or cramping; sudden weight gain. Other less serious side effects may occur. Continue giving atenolol and talk to your veterinarian if your pet experiences upset fatigue or confusion; dizziness; diarrhea, constipation, gas, nausea, or vomiting. Other side effects may also occur. Talk to your veterinarian about any side effect that seems unusual or bothersome to the animal.
What other drugs will affect Atenolol: Tell your veterinarian if your pet is being given a heart medication such as diltiazem (Cardizem) or digoxin; insulin; a nonsteroidal anti-inflammatory (NSAID) such as carprofen (Rimadyl) or aspirin; a respiratory medication such as Albuterol (Ventolin); cimetidine (Tagamet); or prescription or over the counter cough medicines, or cold medicines. Drugs other than those listed may also interact with atenolol. Talk to your veterinarian or pharmacist before giving any prescription or over the counter medicines.
What should I discuss with my veterinarian before using Atenolol: Tell your veterinarian if your pet has asthma; heart problems such as low blood pressure, a slow heart rate, heart block, sick sinus syndrome, heart failure or other heart problems; diabetes; depression; thyroid disease; kidney disease; liver disease; or any type of circulatory disease. Tell your veterinarian if your pet is pregnant or lactating.
Cautions: Tell your veterinarian if your pet is being given any prescription or over-the-counter medicines, as they may interact with Atenolol. If your pet experiences any unusual side effects contact your veterinarian.