Benazepril (brand names: Fortekor, Lotensin) is a prescription‑only heart and kidney medication for dogs. It’s an ACE inhibitor, which helps relax blood vessels and reduce the workload on the heart and kidneys. In the U.S., veterinarians commonly prescribe benazepril for dogs under extra‑label use.
Top reasons it’s prescribed: congestive heart failure from leaky heart valves, high blood pressure, and to help reduce protein loss in urine with certain kidney diseases. Species: dogs. Your veterinarian can discuss why your dog needs this medication and what to expect.
Front desk script: Benazepril is an ACE‑inhibitor heart and kidney medication for dogs; you may see it as Fortekor or Lotensin. We typically use it for heart disease, high blood pressure, or certain kidney conditions. It’s prescription‑only and was chosen specifically for your dog. If you’d like details on giving it and what to watch for, I can have our veterinarian go over that with you.
Common owner questions and quick answers:
Q: What does benazepril do for my dog? A: It relaxes blood vessels so the heart doesn’t work as hard and can help protect the kidneys by reducing protein loss in the urine. Your veterinarian prescribed it based on your dog’s specific heart or kidney needs.
Q: How soon does it work and how should I give it? A: It starts working within 1–2 hours. It can be given with or without food; if it upsets your dog’s stomach, give it with a small meal. Don’t change how you give it unless your veterinarian advises you.
Q: What if I miss a dose? A: Call us for guidance. In general, do not give two doses at once or extra doses; your veterinarian can confirm the safest next step for your dog.
Q: What side effects should I watch for? A: Mild vomiting, diarrhea, or lower appetite can occur. Contact us the same day if you notice ongoing stomach upset, marked tiredness, or changes in drinking or urination. Go to emergency care now if your dog collapses, seems extremely weak, has severe vomiting/diarrhea, or isn’t producing urine.
Q: Can it be taken with my dog’s other meds or supplements, and will monitoring be needed? A: Many medicines can interact with benazepril (for example, NSAIDs/pain relievers, diuretics, or potassium supplements), so check with us before adding anything new. Your veterinarian may schedule early blood and urine tests (often within about two weeks of starting) and may check blood pressure to be sure the medication is safe and working.
Front desk script: Benazepril helps relax blood vessels to support your dog’s heart and kidneys. You can give it with or without food; if it upsets the stomach, offer it with a small meal. If a dose is missed, please don’t double up—call us so the veterinarian can advise on next steps. If your dog collapses, seems extremely weak, or isn’t urinating, seek emergency care right away and let us know.
What owners most often report with benazepril are mild stomach/intestinal signs (a single episode of vomiting, soft stool/diarrhea, or a lower appetite) and sometimes a tired or low‑energy day. These effects have been reported with benazepril and other ACE inhibitors in dogs. Cough is not a typical side effect of ACE inhibitors in dogs. Your veterinarian can discuss what to monitor for your specific patient.
Call us the same day if vomiting or diarrhea is more than a one‑off episode, lasts longer than 24 hours, your dog won’t eat or drink, seems unusually weak or wobbly, or you notice clear changes in thirst or urination. Because benazepril can lower blood pressure, sudden weakness, collapse/fainting, or extreme lethargy are urgent—direct the owner to emergency care now. Do not advise starting, stopping, or changing doses; the veterinarian will determine next steps and if lab tests are needed.
Front desk script: Thanks for calling about benazepril. Some dogs can have mild stomach upset or seem a bit tired when starting—please keep an eye on things today. If there’s repeated vomiting/diarrhea, they won’t eat or drink, they seem very weak or unsteady, or you notice big changes in drinking or peeing, we need to see them the same day. If your dog collapses or faints, go to the emergency hospital now. I’ll alert your veterinarian so they can advise you on next steps.
Benazepril is given by mouth as a tablet. It can be given with or without food; if it upsets the stomach, try giving it with a small meal. Ensure your dog has access to fresh water. Avoid hiding this medication in high‑salt foods (for example, deli meats), as salty treats are not recommended for giving benazepril. Watch to be sure the pill is actually swallowed—some dogs will spit it out later.
If your dog won’t take a pill, try a pill pocket or a small bite of a non‑salty, moldable treat, or ask your veterinarian about having a compounding pharmacy prepare a flavored liquid formulation. A pilling device may also help. Your veterinarian can discuss the best option for your dog and whether compounding is appropriate.
If your dog vomits right after a dose, or you aren’t sure the pill was kept down, do not give an extra dose—call the veterinary team for guidance. If vomiting persists, your dog can’t keep water down, or your dog seems very weak or collapses, seek urgent veterinary care immediately.
Front desk script: You can give benazepril with or without food—if it upsets the stomach, a small meal usually helps. If your dog won’t take the pill, try a pill pocket or small non‑salty treat; we can also ask the doctor about a flavored liquid from a compounding pharmacy. If your dog vomits right after the dose or you’re not sure the pill stayed down, please don’t give another dose until we check with the veterinarian. If your dog is very weak, collapses, or can’t keep water down, please go to an emergency vet right away.
Benazepril is an Rx‑only ACE inhibitor used for heart and kidney conditions in dogs. Refills must be approved by a veterinarian because this medicine can affect kidney values, electrolytes, and blood pressure. After starting benazepril or changing the dose, veterinarians commonly check labs within about 1–2 weeks; dogs treated for protein‑losing kidney disease are typically monitored at least quarterly. If monitoring or recheck exams are overdue, the doctor may require an appointment or updated labs before approving a refill. Your veterinarian will set the specific follow‑up schedule for each patient.
Standard refill workflow: collect the pet’s name, client name, medication name and strength/form, how many days remain, preferred pick‑up or pharmacy, and any recent health changes (appetite, vomiting/diarrhea, weakness, changes in drinking/urination, new medications). Typical supply lengths are 30 or 90 days, depending on the doctor’s approval. Allow 1–2 business days for routine processing; mark requests as urgent if the pet is nearly out. For online pharmacies, submit the request to the veterinarian for review, verify exact drug/strength (benazepril; brand or generic as prescribed), and note that approval can take longer if records or labs need review. If the caller reports collapse, fainting, severe weakness, or suspected overdose, direct them to emergency care immediately and alert the veterinarian.
Front desk script: Thanks for calling about a benazepril refill. I’ll gather a few details and send this to the doctor for approval: your pet’s name, the medication name and strength, how many days you have left, your preferred pharmacy, and any recent health changes. Refills usually take 1–2 business days; the doctor may require updated labs or a recheck first. If your pet is collapsing, extremely weak, or you suspect an overdose, please go to the nearest emergency clinic now and I’ll notify our veterinarian.
Benazepril lowers blood pressure and can affect kidney function. Escalate to a veterinarian or technician immediately if a dog on benazepril collapses or faints; is too weak to stand or is extremely lethargic or wobbly; has trouble breathing; develops facial swelling or hives; is not urinating or has a sudden marked drop in urination; or has persistent, forceful vomiting/diarrhea with poor appetite or signs of dehydration. These can indicate dangerously low blood pressure, kidney complications, or a severe allergic reaction. Your veterinarian can discuss next steps and whether blood pressure or lab checks are needed.
If you suspect an overdose (e.g., the dog chewed extra tablets or ingested a human product like Lotensin), treat this as urgent—contact a veterinarian or an emergency clinic at once. Because ACE inhibitors can interact with other drugs (including NSAIDs/other blood‑pressure or diuretic medications), any new weakness, vomiting, incoordination, or changes in thirst/urination after a recent medication change should be escalated the same day. For poisoning guidance while you are arranging care, you or the clinic can also contact Pet Poison Helpline or ASPCA Animal Poison Control. Your veterinarian can advise on ongoing monitoring while the pet is on benazepril.
Front desk script: Because your dog is on benazepril, the signs you’re describing could be urgent. I’m getting a veterinarian or technician on the line now. If your dog is collapsing, too weak to stand, not urinating, having trouble breathing, or has facial swelling or hives, please come to our hospital or the nearest emergency clinic immediately. If you think your dog may have eaten extra tablets, bring the medication bottle; we can also contact Pet Poison Helpline at 855-764-7661 or ASPCA Animal Poison Control at 888-426-4435 while you’re on the way.
Benazepril is an ACE inhibitor used in dogs for heart and kidney conditions. Commonly co‑prescribed medications include furosemide (water pill), spironolactone (potassium‑sparing diuretic), pimobendan (heart medication), and amlodipine (blood‑pressure medication). Key interaction themes to flag: low blood pressure risk when combined with other blood‑pressure or heart meds (like amlodipine or multiple vasodilators); high potassium risk when combined with spironolactone or potassium products (including potassium supplements or salt substitutes); kidney strain and reduced blood‑pressure effect when combined with NSAID pain relievers. Benazepril is generally used safely with furosemide and pimobendan, but veterinary monitoring is important. Your veterinarian can discuss whether any combination is appropriate for the specific patient.
Over‑the‑counter items to ask about and flag: human NSAIDs (ibuprofen, naproxen, aspirin) and any potassium supplements/salt substitutes. Do not advise owners to start or stop any medication; instead, note the product name and have the medical team review. If an owner mentions a new prescription from another clinic or a recent dose change in a heart, blood‑pressure, or kidney medication, route for same‑day veterinary review.
Escalate immediately if the dog has collapse/fainting, is too weak to stand, or has very pale gums (possible low blood pressure)—direct to emergency care now. Same‑day veterinary review is needed for new or worsening vomiting/diarrhea, not eating, extreme lethargy, or much less urine than usual, especially if a new medication (including NSAIDs or potassium products) was started.
Front desk script: Thanks for letting me know. Because your dog is on benazepril, I need to check any other meds, including over‑the‑counter items like ibuprofen, naproxen, aspirin, or potassium supplements. I’ll note everything you’re giving and have our veterinarian review this today. Please don’t add or stop any medication until the doctor advises you. If your dog collapses, is too weak to stand, or has very pale gums, please go to the emergency hospital now.
Store benazepril at room temperature (about 68–77°F/20–25°C); brief excursions up to 86°F/30°C are acceptable. Keep tablets dry, protected from light, and tightly closed—avoid humid spots like bathrooms, kitchens near the sink/dishwasher, or car glove boxes. Leave blister‑packed tablets in the blister until use; once a tablet is removed, use it within 1–2 days. For Fortekor Flavor Tabs, return unused half‑tablets to the open blister and use within 2 days. Compounded liquids or special formulations may have different storage and a short use‑by date—follow the pharmacy label. If anything on the label is unclear, your veterinarian can confirm brand‑specific storage details.
Use child‑resistant containers and store out of reach of children and pets—flavored tablets can be very tempting. Keep away from purses, countertops, and pill organizers. If a pet or person may have swallowed extra tablets or the wrong pet got into the medication, treat this as urgent: contact our hospital or the nearest emergency clinic immediately, or call ASPCA Animal Poison Control at 888‑426‑4435 (fees may apply). Overdose may cause very low blood pressure with signs such as weakness, collapse, vomiting, or marked lethargy—escalate urgently.
Do not keep expired medication. For disposal, use a drug take‑back kiosk/event or a pharmacy mail‑back program when possible. Do not flush. If no take‑back option is available, mix tablets with something unappealing (used coffee grounds or cat litter), seal in a bag or container, and place in household trash; remove personal information from labels. Your veterinarian or pharmacist can discuss local disposal options.
Before or at the time benazepril is started, schedule baseline lab work: kidney values and electrolytes, plus a urinalysis. If the medication is being used for high blood pressure or protein loss in the urine, plan to check blood pressure and a urine protein/creatinine (UPC) ratio as directed by the veterinarian. Recheck labs 7–14 days after starting benazepril or after any dose change to reassess kidney values, potassium, and (when relevant) blood pressure and UPC.
Ongoing monitoring is typically at least every 3 months once stable, with sooner visits after any medication changes or if the pet has advanced kidney disease or multiple heart/kidney medications. The exact schedule, and whether additional tests are needed, should be set by the veterinarian based on the pet’s condition and other therapies.
Escalate immediately if the pet has collapse/fainting, severe weakness, or repeated vomiting/diarrhea. Do not adjust or stop the medication on your own—your veterinarian can discuss any concerns and tailor the follow-up plan.
Front desk script: For benazepril, we book a recheck 1–2 weeks after starting it or after any change. That visit includes blood and urine tests to check kidney values, electrolytes, and protein, and we may check blood pressure if your vet is monitoring that. After things are stable, most dogs are rechecked about every 3 months, or sooner if your veterinarian advises. If you see collapse, fainting, severe weakness, or repeated vomiting, please seek emergency care now and call us; for decreased appetite or lethargy, call us the same day.
Benazepril is a prescription-only ACE inhibitor used in dogs to help manage certain heart problems and some kidney conditions (including protein loss). In the U.S., it’s commonly used off-label under veterinary direction; brand names you may hear include Fortekor (veterinary, outside the U.S.) and Lotensin (human). Front-desk teams can describe it as a heart and kidney medication the doctor has prescribed for your dog’s specific condition. Your veterinarian can discuss why it was chosen for your pet and what monitoring is needed.
Typical owner-reported issues include decreased appetite, vomiting/diarrhea, or unusual tiredness; serious red flags include collapse/severe weakness, facial swelling, or trouble breathing—these require immediate emergency care. Do not give advice about dosing, refills, or combining with other medicines (for example, NSAIDs, diuretics, or potassium supplements); your veterinarian will advise on drug interactions and lab checks (kidney values, electrolytes, urinalysis). Phrases to avoid: “It’s safe to change the dose,” “Just stop/start it,” or “Use your human Lotensin at home.” Instead: “I’ll have our veterinarian advise you.”
Front desk script: Thanks for calling [Hospital Name]; this is [Your Name]. Benazepril is a prescription heart/kidney medication your veterinarian selected for your dog, and I can route your question or refill request to the doctor for review. For any changes, missed doses, or mixing with other meds, our veterinarian can advise what’s safest. If your dog collapses, seems extremely weak, has facial swelling, or is struggling to breathe, please go to the nearest emergency clinic now. May I send this to the doctor and set up a nurse call or appointment for you?