If she begins to vomit, please get her to the vet. Same with if she stops eating. We have learned about cat constipation over the last few years with our kitty, who is on two motility meds and antacid.

You could try a few things our vet suggested before we had to move on to real drugs: canned pumpkin (not pumpkin pie filling, but just plain canned pumpkin), hair-ball remedy like Petromalt, feeding smaller meals more frequently, and canned food only, no dry food. Some vets swear by high fiber, but in our cat it just made it worse. Just move slowly with any changes you may try.

We feed our cat canned Wellness and actually add more water to it, thinning it slightly to a moister consistency.

Good luck. Imagine having Crohn's yourself (me) and then your cat develops something very similar. Broke my heart. But she is 11 1/2 now and still going . . .