Cisapride (brand name: Propulsid) is a prescription medication that helps the gut move food and stool along. In cats, it’s most often prescribed for megacolon/chronic constipation and other GI motility problems like delayed stomach emptying or reflux.
In the U.S. it isn’t an FDA‑approved veterinary product and is usually made by a compounding pharmacy. Your veterinarian can discuss why it was chosen for your cat, expected benefits, and what to watch for. Because this drug was taken off the human market due to rare heart‑rhythm risks (especially with certain drug interactions), make sure we know about all other medicines and supplements your cat is taking; if your cat seems very unwell, contact the veterinarian right away.
Front desk script: Cisapride—also called Propulsid—is a prescription medicine that helps the intestines move things along. We most often use it in cats for megacolon or chronic constipation, and sometimes for other motility issues. It typically comes from a compounding pharmacy. Your veterinarian can explain how it works for your cat and any safety considerations; if your cat seems very unwell, please call us right away.
Common owner FAQs (use these short answers at the desk or on the phone):
- Why is this coming from a compounding pharmacy? Cisapride isn’t sold as a regular manufactured product in North America; veterinarians prescribe it and a compounding pharmacy makes the dose and form for the individual pet. It’s prescription-only. Your veterinarian can discuss why it was chosen for your cat’s condition.
- How fast does it work and how should it be given? Cisapride starts acting in about 1–2 hours. It’s given by mouth and can be given with or without food; if a dose on an empty stomach causes vomiting, future doses can be given with a small meal. Measure liquid carefully and follow the label from the compounding pharmacy.
- What if I miss a dose? If you miss a dose, give it when you remember—unless it’s close to the next scheduled dose. If it’s close, skip the missed dose and resume the regular schedule. Do not double up.
- What side effects should I watch for? Mild vomiting, diarrhea, or belly discomfort can occur. More serious signs include wobbliness/incoordination, heavy drooling, tremors, agitation, overheating, or seizures—these need immediate veterinary care. If your cat has a painful, bloated belly, is repeatedly vomiting, or isn’t passing stool, treat this as urgent and seek veterinary care right away.
- Can it be given with other medicines or supplements? Some medicines can interact with cisapride (for example, certain antifungals, macrolide antibiotics other than azithromycin, some heart-rhythm drugs, and tricyclic antidepressants). Always tell us and the pharmacist everything your cat takes, including over-the-counter products and herbs. Your veterinarian can review your cat’s full med list and advise what’s safe.
Front desk script: Cisapride helps move the GI tract for cats with constipation or megacolon and is made by a compounding pharmacy just for your pet. It usually starts working within 1–2 hours; follow the label, and if a dose on an empty stomach upsets your cat, future doses can be given with a small meal. If you see wobbliness, tremors, overheating, seizures, or your cat is vomiting repeatedly with a swollen or painful belly, please seek emergency vet care now. If you miss a dose, give it when you remember unless it’s close to the next one—don’t double up. For any medication questions specific to your cat, your veterinarian can advise you.
What owners usually report: cisapride often starts working within 1–2 hours. Mild, short‑lived stomach/intestinal upset can occur, such as a single episode of vomiting, softer or more frequent stools, or mild belly discomfort/cramping. These are known side effects of the medication and are typically mild. Your veterinarian can discuss what’s expected for that specific cat. [Sources: VCA, PetMD]
Call the clinic the same day if side effects seem more than mild: repeated vomiting, watery diarrhea, visible blood in stool or very dark/black stool, the cat won’t eat, seems painful in the belly, acts unusually agitated or lethargic, drools excessively, or seems wobbly/uncoordinated. These can indicate the dose isn’t agreeing with the cat or a separate problem and should be reviewed by the veterinarian. [Sources: VCA, Great Pet Care, PetMD]
Escalate immediately (go to the nearest emergency vet) if the cat has seizures, trouble breathing, collapses, has severe muscle tremors, or feels very hot. These are rare but serious signs reported with high exposures and need urgent care. Your veterinarian can determine whether the medication or an underlying condition is responsible and advise on next steps. [Sources: VCA, Great Pet Care, Wedgewood Pharmacy]
Front desk script: Thanks for calling about cisapride. Some cats have mild tummy upset, softer stools, or a single vomit—those are usually expected. If your cat is vomiting repeatedly, has watery or bloody stool, isn’t eating, seems painful, or is acting agitated or wobbly, we’d like to have our veterinarian review this today. If you see seizures, trouble breathing, collapse, or your cat feels very hot, please go to the nearest emergency vet now. Our veterinarian can talk through what’s normal for your cat and any next steps.
Cisapride is a prescription-only gut‑motility medication commonly compounded for cats. In North America it’s typically prepared by a compounding pharmacy as small tablets/mini‑tabs, capsules, or flavored liquid; some pharmacies also offer chews or a transdermal gel, though oral forms are generally more reliable for cats. Your veterinarian can advise which form best fits the patient.
Administration tips: Give exactly as labeled. It may be given with or without food; if a cat vomits when dosed on an empty stomach, give future doses with a small meal or treat. For pills, try hiding in a pill pocket or a small “meatball” of wet food, or lightly coat the tablet/capsule with a dab of butter/treat paste to help it go down. If “dry pilling,” follow with a teaspoon of water or a small snack to wash it into the stomach. If pilling is difficult, ask the veterinarian about a flavored liquid or tiny tablets from a compounding pharmacy. Do not crush, split, or change the form unless the prescribing veterinarian or pharmacist says it’s okay.
Troubleshooting and when to escalate: If the cat spits out or vomits a dose, do not immediately redose—call the clinic for guidance. Call the clinic the same day if there is repeated vomiting, marked lethargy, a painful or bloated belly, or ongoing straining with no stool. Seek emergency care immediately for collapse or nonstop vomiting. Before adding any new medications or supplements, confirm with the veterinarian or pharmacist to avoid interactions.
Front desk script: Cisapride is usually a compounded medicine for cats; it comes as tiny tablets, capsules, or a flavored liquid. You can give it with or without food—if your cat vomits on an empty stomach, give the next doses with a small meal. If pilling is hard, try a pill pocket or a small meatball of wet food and then offer a sip of water; we can also ask the veterinarian about a flavored liquid or mini‑tabs. If your cat is repeatedly vomiting, seems very painful or bloated, or is straining without passing stool, please contact us today; if there’s collapse or nonstop vomiting, go to the emergency hospital right away.
Cisapride is a prescription‑only prokinetic used off‑label in cats for constipation/megacolon. In North America it is not commercially manufactured and must be filled by a compounding pharmacy, which can add processing time and limit how much can be dispensed at once based on the pharmacy’s beyond‑use date (BUD). Let the veterinarian decide recheck timing and any monitoring; alert the doctor if the pet has started new medicines (especially certain antibiotics or antifungals) or has a history of heart rhythm problems. Your veterinarian can discuss interactions and whether any tests are needed. [Front desk: do not give dosing advice.] (VCA; Merck Veterinary Manual.)
Refill workflow: confirm patient and caller details, medication name/strength/form as on the label, prescribing veterinarian, how much is left, preferred pharmacy (clinic or approved compounding pharmacy), and any side effects or recent medication changes. Turnaround: allow time for veterinary approval plus compounding and shipping; ask clients to request refills about a week before they run out. Typical supply amounts vary with the prescription and BUD—many compounded liquids/tablets are dispensed in 30–90‑day quantities when appropriate. (VCA; Wedgewood.)
Online pharmacy process: use clinic‑approved, appropriately licensed pharmacies; if a client requests an outside or online pharmacy, ensure it requires a valid veterinary prescription and is properly accredited/licensed (e.g., NABP Digital Pharmacy) and watch for FDA‑listed red flags. Escalate same‑day to the veterinarian if the cat hasn’t had a bowel movement in 48–72 hours, is vomiting, lethargic, or seems painful. (FDA; NABP; VCA.)
Front desk script: “We can help with a cisapride refill. May I confirm your cat’s name, the medication strength and form on the label, how many doses you have left, and your preferred pharmacy? Because cisapride is compounded, refills can take extra time for preparation and shipping, so we recommend requesting refills about a week before you run out. I’ll send this to the veterinarian for approval—please note any new medications or side effects so the doctor can review. If your cat hasn’t had a bowel movement in 48–72 hours, is vomiting, very tired, or seems painful, please let us know right away so we can arrange a same‑day evaluation.”
Escalate immediately if the cat has trouble breathing, facial swelling or hives, collapses, or has a seizure after cisapride—these are emergencies. Severe neurologic signs (staggering, tremors, agitation, very high body temperature, or seizures), or marked lethargy with profuse diarrhea can indicate toxicity or an overdose and need urgent veterinary care now. Poison control can also be contacted for guidance while en route.
Also escalate the same day (sooner if the cat looks painful or is vomiting repeatedly) if there is repeated vomiting, a distended or painful abdomen, unproductive straining, or any blood in stool/black tarry stool. Because cisapride speeds gut movement, these signs can be dangerous if a blockage, perforation, or GI bleeding is present and must be assessed by a veterinarian.
Alert a veterinarian right away if the pet just started or was prescribed a new medication that is known to interact with cisapride (examples include certain antifungals like itraconazole/ketoconazole, macrolide antibiotics such as erythromycin or clarithromycin, some heart rhythm medicines like amiodarone or sotalol, some fluoroquinolones, ondansetron, tricyclic antidepressants, and others). Your veterinarian can discuss risks, monitoring, and next steps for that specific patient.
Front desk script: Based on what you’re describing, this could be an emergency with cisapride. Please head to the nearest emergency veterinary hospital now; I will alert our clinical team and the ER. If you suspect an extra dose or any exposure, you can also call Pet Poison Helpline at 855-764-7661 or ASPCA Animal Poison Control at 888-426-4435 while you’re on the way. I’m looping in a technician/veterinarian immediately to guide next steps.
Cisapride has important drug–drug interaction risks. Flag immediately if an owner mentions azole antifungals (itraconazole, ketoconazole, fluconazole) or macrolide antibiotics (erythromycin, clarithromycin), as these can raise cisapride levels and increase the chance of dangerous heart rhythm problems. Also flag other QT‑prolonging drugs such as ondansetron, certain antiarrhythmics (e.g., sotalol, amiodarone, procainamide, quinidine), some fluoroquinolone antibiotics, and tricyclic antidepressants (e.g., amitriptyline). Your veterinarian can discuss safer alternatives or monitoring when these are present.
Commonly co‑prescribed or commonly mentioned alongside cisapride in cats: laxatives/stool softeners (lactulose, polyethylene glycol 3350/Miralax), anti‑nausea medicines (maropitant/Cerenia; ondansetron—flag due to potential additive QT risk), and acid reducers. Among over‑the‑counter human products, specifically flag cimetidine/Tagamet (can raise cisapride levels) and antihistamines with anticholinergic effects like diphenhydramine/Benadryl (may reduce cisapride’s motility effect). Owners also commonly mention famotidine/Pepcid, omeprazole/Prilosec, and Miralax—capture these on the medication list and defer to the veterinarian for safety and timing guidance.
Escalate urgently if the owner reports collapse, fainting, sudden severe weakness, or a very fast/irregular heartbeat while the cat is on cisapride—advise immediate emergency evaluation. If an owner reports current cisapride plus an azole antifungal or macrolide antibiotic, alert the veterinarian the same day to review the combination, even if the pet seems stable.
Front desk script: Thanks for letting me know your cat is on cisapride. Some medicines can interact with it. I’m going to note all prescription and over‑the‑counter products, including things like Tagamet (cimetidine), Benadryl (diphenhydramine), Pepcid, Prilosec, Miralax, and any antibiotics or antifungals. I can’t advise starting or stopping anything, but I’ll have our veterinarian review these today and let you know next steps. If you notice fainting, collapse, sudden weakness, or a very fast or irregular heartbeat, please go to the nearest emergency clinic now and call us on the way.
Storage varies by formulation and the compounding pharmacy. Follow the label exactly. If unknown, tablets/capsules can be kept at room temperature in a dry place away from light and moisture. Many compounded liquid suspensions are designed for room temperature storage; some may require refrigeration—do not freeze. Keep the medication in its original, child‑resistant container, tightly closed, and shake liquid suspensions before each use. Your veterinarian or the dispensing pharmacy can confirm the correct storage if there’s any doubt.
The beyond‑use date (BUD) printed on the prescription label is the medication’s shelf life after it was compounded; do not use it past this date. If the bottle was stored outside the directions on the label (for example, left in a hot car or refrigerated when the label says room temperature), or if you notice changes in color, odor, or separation, pause dispensing and ask the veterinarian or pharmacy for guidance before use.
Safety and disposal: Store out of reach of children and other pets; cisapride can be harmful if accidentally swallowed by people or animals. If a child or another pet ingests the medication, contact Pet Poison Helpline (855‑764‑7661) or the ASPCA Animal Poison Control Center (888‑426‑4435) right away, or call the human Poison Help line (800‑222‑1222) for people. Prefer drug take‑back programs for disposal. If no take‑back is available, follow FDA guidance for home trash disposal; do not flush unless specifically instructed. Your veterinarian can discuss local take‑back options and answer storage questions at pickup.
For cisapride in cats, there is no specific routine labwork or ECG monitoring required for the medication itself. The veterinarian may set individualized follow‑up based on the cat’s underlying condition, other medications (drug–drug interaction risk), and overall health (e.g., liver or kidney disease). Front desk teams should schedule progress checks exactly as the prescribing veterinarian indicates and confirm timing with the DVM if it isn’t written in the discharge notes. Ask owners to keep a simple litterbox log (stool frequency/consistency, straining, vomiting, appetite, activity) to review at rechecks. Your veterinarian can discuss whether any blood tests or additional monitoring (including ECG if there are cardiac concerns or interacting drugs) are needed for their case.
For cats on longer‑term cisapride (e.g., megacolon management), expect periodic rechecks set by the DVM to assess response, side effects, hydration, and concurrent therapies. When booking refills, confirm the date of the last exam and follow the clinic’s refill/recheck policy, deferring to the veterinarian if timing is unclear.
Escalate the appointment the same day or direct to emergency care if owners report no stool for 48+ hours, repeated unproductive straining, repeated vomiting, a painful or bloated abdomen, severe lethargy/collapse, or if the cat seems to be straining to urinate (true emergency).
Front desk script: “Cisapride helps move stool through the GI tract. There isn’t routine bloodwork required just for this medicine, but the doctor may want tests based on your cat’s overall health or other meds. I’ll schedule your progress check according to the doctor’s plan—please keep a quick litterbox log until then. If you see no stool for over two days, repeated straining without stool, vomiting, or a painful belly, contact us the same day or go to the nearest emergency hospital. The veterinarian can review whether any labs or other monitoring are needed for your cat.”
Cisapride is a prescription-only motility medication that helps move food and stool through a cat’s digestive tract and is often used in cats with constipation or megacolon. In the U.S., it is not FDA‑approved for animals and is typically filled through a compounding pharmacy, so refills may require extra processing time. Front desk staff should confirm the pet’s current prescription, pharmacy preference, and any recent changes in medications, diet, or health. Your veterinarian can discuss whether cisapride is appropriate for an individual cat and review any needed monitoring.
Commonly reported side effects are mild stomach upset, such as vomiting, diarrhea, or abdominal discomfort. More serious signs that need immediate escalation include incoordination, excessive drooling, muscle twitches or tremors, agitation or abnormal behavior, high body temperature, or seizures; if these occur, direct the caller to the nearest emergency clinic now. Cisapride should not be used in pets with conditions where increased gut movement could be harmful (for example, suspected obstruction, perforation, or GI bleeding). Always flag potential drug interactions for the medical team—especially if the cat is on certain antifungal or anti‑nausea medicines—so the veterinarian can advise.
Phrases to avoid: “It’s safe for all cats,” “You can start/stop or change the dose on your own,” “We can sell this without a prescription,” or giving any dosing amounts. Use deferral language such as, “Your veterinarian can discuss dosing, side effects, and whether cisapride is right for your cat.”
Front desk script: “Thank you for calling [Hospital Name], this is [Your Name]. How can I help with your cat’s cisapride today?”
“Quick answer: cisapride helps the intestines move; it’s prescription-only and often compounded, so refills can take extra time. I can start a refill request now.”
“For any questions about dosing, side effects, or whether to continue, our veterinarian will advise—may I place a note for our medical team to call you, or schedule a consult?”
“If your cat collapses, has seizures, severe weakness, or repeated vomiting, please go to the nearest emergency clinic right now.”
“Before we wrap up, do you prefer the same pharmacy, and would you like to book a follow-up appointment while I process the request?”