Atenolol treats hypertension and tachyarrhythmia in dogs and cats.

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Atenolol Basics

Atenolol treats hypertension, also known as high blood pressure, in dogs and cats. It also treats tachyarrhythmia, or abnormally elevated heart rate. This medication acts as a Beta1-blocker.

Atenolol requires a prescription from your veterinarian.

Atenolol Directions

Use as directed by your veterinarian, and follow all instructions printed on the prescription label. Complete the entire prescription unless instructed otherwise by your veterinarian. Dosage and duration of treatment depend on the condition being treated and response to the medication.

Store at room temperature, protected from light and moisture.

Atenolol Warnings 

Keep out of the reach of children and pets. Do not use this medication in pets that are pregnant or nursing. In addition, do not use in pets suffering from congestive heart failure (CHF) or those with a known hypersensitivity to atenolol. Use with caution in animals with renal insufficiency or diabetes. This drug may interact with some other medications. Therefore, inform your veterinarian of any and all medications your pet may be taking. This is especially important if your pet is currently taking sympathomimetics, anesthetic agents, phenothiazines, furosemide, calcium channel blockers, hydralazine, or drugs that cause hypotension. Do not stop giving your pet this medication abruptly. Doing so can lead to an extreme worsening of symptoms. Treatment should be stopped gradually. If you notice any behavioral or physiological changes in your pet while administering atenolol, contact your veterinarian immediately.

Adverse Reactions and Serious Side Effects

Adverse reactions and serious side effects are rare, however, they can occur. Seek veterinary attention if your pet shows signs of a more serious reactions. Symptoms of a more serious reaction include coughing, lethargy, and difficulty breathing.

If you have any additional questions regarding this product, please contact us at (877)220-6337. A member of our pharmacy staff will be happy to assist you!

Additional information

Prescription Strength



Capsule, Tablet