Mary I'm so sorry to hear this. Hopefully your vet can get her back on track and keep her that way. Lots of prayers and positive thoughts are being sent her way.

I've also heard that since cats are lactose intolerant that giving a cat some milk could help with constipation. My RB Pepper used to have take lactulose every day because he also had problems but he was only about 4 or 5 years old at the time.