For: Dogs and Cats This product is available in multiple strengths and sizes; please select the appropriate option for your pet as recommended by your veterinarian. For current availability, please refer to the product selection above.
Active ingredient(s)
Enalapril maleateCommon brand names
Vasotec®Drug class
Angiotensin–Converting Enzyme InhibitorUsage: Enalapril should be given orally as directed by your veterinarian. Please consult your veterinarian before making any changes or discontinuing the prescribed dosing schedule. Your veterinarian may require blood tests and monitor your petâs blood pressure while taking this medication. This medication can be given with or without food. If your pet vomits or appears unwell after receiving a dose on an empty stomach, give future doses with food or a small treat. If vomiting continues, contact your veterinarian. Administer 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 two doses at once.
Storage: Store in a cool, dry place at a controlled room temperature (68 to 77°F, excursions permitted between 59 and 86°F). Keep in a tight, light–resistant container and out of the reach of children and pets. Store away from heat and direct sunlight. Do not store this medication in the bathroom, near the kitchen sink, or in damp places. The medicine may break down if exposed to heat or moisture. This medication is generally well tolerated. Possible side effects may include (but are not limited to): stomach upset, loss of appetite, vomiting, diarrhea, weakness, and low blood pressure. Notify your veterinarian immediately if your pet appears extremely tired or dizzy, develops a rash, or any signs of infection (fever, etc) appear. Notify your veterinarian if your pet experiences any of the effects described above, or if you notice any other side effects that are persistent or troublesome. If you notice anything unusual, please consult your veterinarian. Do not administer this medication to pregnant animals. Safe use of this medication has not been established in nursing animals. Do not administer to animals with a known history or suspected allergy⁄hypersensitivity to this medication or any of its ingredients. Allergic reactions to medications may occur. Be sure to inform Vetsource and your veterinarian if your pet has any known drug sensitivities or allergies. If your pet displays symptoms of an allergic reaction, discontinue therapy and call your veterinarian immediately or seek emergency veterinary attention. Symptoms may include (but are not limited to): swollen lips, tongue, face, or airways, difficulty breathing, agitation, profuse salivation, and widespread hives or itching. The following drugs* may have potential interactions with this medication: amitriptyline, blood pressure medications (amlodipine, diuretics, sildenafil, etc), clomipramine, CNS depressant drugs (acepromazine, hydroxyzine, opioids, etc), corticosteroids (dexamethasone, prednisone, etc), NSAIDs (carprofen, etc), potassium supplements, pregabalin (Bonqat). *NOTE: this may not be a comprehensive list. Contact your veterinarian if your pet experiences any unusual reactions when different medications are given together. Please ensure your veterinarian is aware of all medications and supplements that your pet is currently receiving. Your veterinarian may prescribe multiple medications, even if a potential drug interaction may occur. In these instances, your veterinarian may adjust the dosages ormonitor your pet more closely. If you are concerned that your pet has experienced an adverse reaction to this medication, please contact Vetsource Pet Owner Care at 877–738–4443. Last revised: 4⁄01⁄2025