Enalapril for Conures: Uses, Dosing & Side Effects

This information is for educational purposes only. Never give your pet any medication without your veterinarian's guidance. Dosing, frequency, and safety depend on your pet's specific health profile.

Enalapril is a prescription ACE inhibitor. It works by blocking part of the renin-angiotensin-aldosterone system, which helps relax blood vessels and reduce the workload on the heart. In veterinary medicine, it is widely used in dogs and is also used extra-label in birds, including parrots such as conures, when your vet feels it fits the bird's condition.

For conures, enalapril is usually considered a supportive heart medication, not a cure. Your vet may use it as one part of a broader plan that can also include oxygen support, diuretics, imaging, blood pressure checks, and other cardiac drugs depending on what is driving the problem.

Because birds are small and can change quickly, dosing accuracy matters a lot. Many conures need a compounded liquid so the dose can be measured precisely. Your vet may also recommend follow-up bloodwork or rechecks, because enalapril is cleared mainly through the kidneys and can affect blood pressure and hydration status.

In conures, enalapril is most often used as part of treatment for heart disease or heart failure, especially when your vet wants to reduce afterload and make it easier for the heart to pump. Avian cardiology references also list ACE inhibitors for some birds with systemic hypertension and as part of management for certain cardiovascular changes linked to atherosclerotic disease.

This medication is usually not used by itself in a bird that is struggling to breathe or is unstable. In those cases, your vet may pair it with other therapies such as furosemide, oxygen, warmth, fluid planning, and hospitalization. Which combination makes sense depends on the exam, radiographs, echocardiography if available, and how sick the bird is at that moment.

Conures can hide illness until they are very sick. If your bird has open-mouth breathing, tail bobbing, weakness, fainting, or sudden collapse, see your vet immediately. Those signs can happen with serious heart or respiratory disease and should not be managed at home.

Enalapril dosing in birds is individualized by your vet. Published avian references commonly list 1.25-5 mg/kg by mouth every 12 hours as a broad bird cardiac range, while a pharmacokinetic study in pigeons and Amazon parrots supported a starting dosage of 1.25 mg/kg by mouth twice daily. That does not mean every conure should receive those doses. Your vet may start lower, adjust more slowly, or choose a different interval based on body weight, hydration, kidney values, blood pressure, and the exact heart problem.

Because conures are small, even tiny measuring errors can matter. Use the syringe your vet or pharmacy provides, and ask for a demonstration if needed. Do not switch between tablet fragments and liquid, or between different compounded strengths, unless your vet confirms the new dose in mg/kg and mL.

Enalapril can be given with or without food. If your conure vomits or regurgitates after a dose on an empty crop, tell your vet before changing the plan. Fresh water should always be available unless your vet has given different instructions.

If you miss a dose, contact your vet or pharmacist for guidance rather than doubling the next one. If your bird gets an extra dose, seems weak, or is breathing harder than usual, call your vet right away. Overdose concerns center on low blood pressure, weakness, and kidney stress.

Possible side effects of enalapril in pets include decreased appetite, vomiting, diarrhea, tiredness, weakness, low blood pressure, kidney dysfunction, and elevated potassium. In birds, pet parents may notice these problems as sitting fluffed, reduced activity, less interest in food, wobbliness, or seeming unusually sleepy after a dose.

Some conures tolerate enalapril well, especially when the dose is introduced carefully and the bird is monitored. Still, birds can decline fast if blood pressure drops too much or if they become dehydrated. That risk can be higher when enalapril is combined with diuretics or when a bird is already unstable.

Call your vet promptly if your conure seems weaker than usual, is eating less, vomits, has diarrhea, or is drinking differently. See your vet immediately for collapse, severe lethargy, worsening breathing effort, inability to perch, or any sudden major change. Those signs may reflect the medication, the underlying heart disease, or both.

Enalapril can interact with other medications that affect blood pressure, kidney perfusion, or potassium balance. Merck notes that hypotension may develop when ACE inhibitors are used with other vasodilators, such as amlodipine, or with diuretics. Concurrent use with potassium-sparing diuretics such as spironolactone can increase the risk of hyperkalemia.

In avian heart patients, combination therapy is common, so interactions are not always a reason a drug cannot be used. They are a reason your vet may want closer monitoring, slower dose changes, or lab work. Merck also notes that enalapril appears compatible with several common cardiac drugs in other veterinary species, including furosemide, pimobendan, digoxin, antiarrhythmics, beta blockers, bronchodilators, and cough suppressants.

Tell your vet about every product your conure receives, including compounded medications, supplements, herbal products, and anything added to food or water. Never start, stop, or combine heart medications on your own. In birds, even a small change can alter hydration, blood pressure, and medication exposure.