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Lactulose Cat Laxatives
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- Health & Wellness
My cat has constipation. Can I give lactulose syrup and how much?
Hello and thank you for reaching out to Petco Pet Education Center, formerly Petcoach. Yes, you can give lactulose orally. If he is a medium-sized cat, he can likely get 2 mL by mouth twice daily until his stools are softer. If he does not defecate for longer than 48 hours, he should be seen by a veterinarian right away. Constipation can progress to obstipation, meaning a cat is completely unable to pass the feces. This can lead to rupture of the colon and/or irreversible problems with the colon. I hope this is helpful.
Updated on September 24th, 2025
- Health & Wellness
My cat is constipated with a broken pelvis. How much lactulose?
Stick with the dose that your veterinarian recommends. Constipation can kill. The type of diarrhea he gets from lactulose likely will not impair him. Do not feed him dry food, but stick to good quality tinned cat food, or low residue tinned cat food. You can ask your vet if you can reduce the amount of the individual dose, however, please do not do this on your own without consulting with your vet. Unfortunately the broken pelvis has possibly caused the passage through the pelvis to get smaller and the constipation may have expanded the colon before the pelvis so that feces collect there and do not fit through the pelvical opening. So it is much better if the feces are soft, or even fairly liquid provided that is caused by the lactulose.
Updated on September 24th, 2025
- Food & Nutrition
My cat has chronic constipation. Is lactulose or Miralax better?
Hello, and thanks for your question on Petco Pet Education Center, formerly Petcoach. For now, I wouldn't stress about knowing exactly which medication has helped Kiki - in truth, it's probably been a combination of all the different interventions. Cats who are prone to constipation often need constant adjustments in their management, so for now, if she's doing well, continue the miralax as your vet advised and touch base with them if her stools become hard or less frequent again. Sometimes cats may need to be on both meds for a time, or even switch foods entirely to a diet formulated for cats with constipation issues. So, there's probably not one "right" medication for her, and a therapy that worked this time might still need to be adjusted in the future. I have found the Royal Canin GI Fiber Response food to help immensely - you could ask your vet if that's an appropriate option if Kiki continues having bouts of constipation. Hope this helps!
Updated on September 24th, 2025
- Vet Q & A
Is daily Lactulose safe for my cat's long-term digestive health?
Thanks for using Petco Pet Education Center, formerly Petcoach! Yes, as long as you have found the right dose where she is not having diarrhea and losing an excess amount of fluids then it would be ok to be used on a daily basis. Good luck and have a good night!
Updated on September 24th, 2025
- Food & Nutrition
Is lactulose safe for my overweight cat's constipation, teeth, and weight?
While lactulose is a type of sugar, it will not make your cat overweight and it will also not damage your cat's teeth. Your kitty actually should lose some weight which will help with the constipation as well. If lactulose is working resolving the constipation then I would keep using it. Also make sure her water bowl is at least 5 feet away from the food bowl as cats do not like to drink water near their food.
Updated on September 24th, 2025
