Cisapride, a prokinetic drug, is often used by veterinarians to manage gastrointestinal issues in cats. This medication is primarily used to enhance the movement of food through the digestive system, providing relief for conditions like constipation, megacolon, megaesophagus, and gastrointestinal reflux. However, as with any medication, cisapride for cats comes with a potential for side effects. It's essential for cat owners to understand these implications while considering the overall health and comfort of their feline friends.

đź’Š Essential Insights for Pet Owners

  • Cisapride is a medication used to treat gastrointestinal disorders in cats by stimulating the motility of the gastrointestinal tract.
  • Cisapride is a prokinetic agent that helps to increase the strength and frequency of contractions in the muscles of the digestive tract.
  • For dosing: Cats weighing <5kg: 2.5mg 2-3 times per day; >5kg: 5mg 2-3 times per day.
  • Cisapride is effective in treating constipation, megacolon, and gastroesophageal reflux disease, and is generally safe and well-tolerated in cats when administered properly.

What is Cisapride and How Does It Work?

Cisapride is a prokinetic medication frequently prescribed by veterinarians for treating gastrointestinal motility disorders in cats, such as chronic constipation, megacolon, and gastroesophageal reflux disease (GERD).

It works by tightening the smooth muscle at the bottom of the esophagus, which helps prevent stomach acid from coming back up. It also gets the muscles in other parts of the digestive system moving, from the stomach to the intestines, making it easier for food to pass through. Cisapride works fast in cats with effects often noticed in 1-2 hours.

More specifically, cisapride for cats simulates the release of acetylcholine which is a neurotransmitter responsible for muscular contractions. The end result is an increase in the strength and frequency of muscular contractions throughout the digestive system which helps to move food through quickly and efficiently.

The Main Uses of Cisapride for Cats

The primary benefit of using cisapride for cats is that it can help reduce or even eliminate symptoms associated with gastrointestinal disorders such as constipation, megacolon, and GERD. Cisapride is safe and generally well-tolerated in cats when administered correctly, so it can be a great option for treating these conditions.

Constipation

Constipation in cats can lead to discomfort and even health issues if left untreated. Cisapride for cats can be a game-changer here. Stimulating the muscles in the intestines helps move stool more efficiently, making it easier for your cat to have regular bowel movements. If your cat has been struggling with constipation, a discussion with your vet about cisapride could be the first step toward relief.

Megaesophagus

Megaesophagus is a condition where the esophagus—the tube that carries food from the mouth to the stomach—becomes enlarged and loses its ability to move food effectively. Cisapride can help by tightening the muscles in the esophagus, making it easier for food to reach the stomach. This can be especially beneficial for cats who have difficulty swallowing or who regurgitate their food.

Megacolon

Megacolon is a severe condition where the large intestine or colon becomes very dilated and enlarged and filled with hard, dry stool. This can be extremely uncomfortable for your cat and may require urgent medical attention. Cisapride can be part of the treatment plan, as it stimulates the muscles in the colon, helping to move the stool through more efficiently. Always consult your veterinarian for a comprehensive treatment approach if you suspect your cat has megacolon.

Gastrointestinal Reflux

Also known as acid reflux, this condition occurs when stomach acid flows back into the esophagus, causing discomfort and potential damage to the esophageal lining. Cisapride helps by tightening the muscle at the end of the esophagus, preventing the stomach acid from coming back up. This can provide significant relief for cats suffering from this uncomfortable condition.

Dosing and Administration

Cisapride for cats is a prescription compounded medication and therefore can be formulated in a variety of different ways -- from tablets to capsules or liquid formulations. Ask your veterinarian what option may be best for your cat.

The dosing of cisapride for cats is relatively straightforward. For small or normal-sized cats weighing less than 5 kg, the recommended dosage of cisapride is 2.5 mg every 8 to 12 hours. On the other hand, large cats that weigh more than 5 kg should receive a 5 mg dose at the same frequency.

When treating feline megacolon with cisapride, it is advisable to alter the cat's diet as well. Instead of a high-fiber diet, which may be beneficial in milder cases when the colon still has some motility, switch to a highly digestible canned diet. This ensures that there is less bulk for the cat to pass, making the treatment more effective.

When using cisapride to treat gastric motility disorders in cats, we advise giving the dose 30 minutes prior to eating for maximum benefit.

Side note: Cisapride was removed from the human market due to the risk of fatal cardiac arrhythmias. However, it's important to note that this risk is not present in dogs and cats unless they are given doses that are 20 times higher than the currently recommended dosage.

Side-effects and Precautions When Using Cisapride

Fortunately, cisapride is well tolerated by cats with minimal side effects.

When using very high doses of cisapride, cats may experience abdominal cramping, vomiting, and/or diarrhea. These signs are typically only seen in overdose situations. If your cat experiences these symptoms while on cisapride, please contact your veterinarian right away.

If your cat has issues like bleeding in the stomach or intestines, a blockage, or even a suspicion of a tear in the digestive tract, prokinetic medications like cisapride should not be used.

Drug Interactions: Cisapride helps speed up the process of emptying the stomach. This means that other medications your cat might be taking could work more effectively because they get absorbed faster into the body. Therefore, the use of any other medications while on cisapride, especially those with narrow safety margins, such as cyclosporine, theophylline, or digoxin, should be carefully monitored.


In summary, cisapride is a highly effective medication for treating a variety of gastrointestinal disorders in cats, including constipation, megaesophagus, megacolon, and acid reflux. It works by stimulating muscular contractions in the digestive system, enhancing the transit of food and reducing discomfort. While the dosing regimen is straightforward, it is vital to follow the advice of your veterinarian closely to avoid potential side effects. As with any medication, it is crucial to monitor other concurrent treatments due to potential drug interactions. Always consult your veterinarian for a comprehensive treatment approach suited to your cat's specific needs.