You can ask your vet about using
Zantac instead. My crf
![Cat](http://www.pets.ca/forum/images/smilies/cat.gif)
Duffy was recently hospitalized in the ER vets & they used zantac to control her stomach acid.
According to Tanya's site some have found pepcid ac causes vomiting in a small number of cats, and some have found the zantac may also help with constipation.