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My cat has diarrhea. Can I use Benefiber or Glandex long-term?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Female | spayed | 11 lbs

My previous question was answered but I wanted to add. So my cat has constipation, vomiting a little after pooping, I had her on glandex for a few days but now she has diaherra, I was told miralax can help but I do have benefiber on hand, would that work instead? How much do I give and can I give her benefiber daily for the rest her life or switch back to glandex for daily life long supplement to prevent constipation again?

1 Answer

Most Helpful Answer

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Answered By Daniel Fonza, DVM

Veterinarian

Published on October 19th, 2023

Hi there and thank you for using Petco Pet Education Center, formerly Petcoach! Miralax and Benefiber are quite different from each other. I would not use Miralax if she is having diarrhea as you no longer need a laxative. Benefiber would be my recommendation to help bulk up the stool since she is experiencing diarrhea now. Glandex is fine to continue long term as it is a good source of fiber. You can also use Vetasyl capsules for cats (protein in capsule form). If using Benefiber, I would use ~1/2 tsp added to the food. You can also use Laxatone to help keep stools soft and help prevent constipation. I hope this helps!

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