I have tried many, many products aimed at helping with digestive upset for my cat. Her pain and suffering was so great that I thought I was going to have to put her to sleep. I went to multiple vets and had thousands of dollars worth of diagnostics done to try and find out why she was having acid reflux, crying and subsequently vomitting (endoscopy, xray, ultrasound, bloodwork, etc). One vet told me to just give her pepcid. This worked for a while, but then became completely ineffective after a while. The same vet then told me that she probably just has food allergies and would have to be on steroids for the rest of her life, and thats all that could be done, and prescribed different kinds of Science Diet (which we all know is actually a terrible food for cats with digestive problems). Well, what do you know, the steroids didn't help AT ALL. I tried probiotics of various brands for pets, I tried digestive enzymes, I tried many different natural products designed to help ease digestive / intestinal inflammation.... I tried a homiopathic vet (the only one in my area) and spent a few thousand more dollars rerunning tests and running other tests for Pancreatitis, etc. I tried MAKING her food from raw meat to try and eliminate food allergies to commericial foods as a potential problem, etc. I TRIED EVERYTHING, but still my cat was constantly licking her lips, then crying in terrible pain and vomitting very consistently, and now was losing interest in her food and was losing weight and starting to look boney. I was determined to not give up on her though. I had just lost my wife to infection during a failed bone marrow transplant / cancer during all this, and was not about to give up on my girl. I stopped making her food and started getting her Natures Variety canned Rabbit formula. She loved the food but it did not seem to be helping her feel better, even though a lot of other people were having great success. I then found a site called wellvet dot com that said that Ulcinex (link at the bottom of this review) was very effective at repairing ulcers and the stomach lining in pets. It also said that it was very effective at controlling vomitting that occurs a few hours after eating, which is EXACTLY what was consistently happening, and no other product that I had found so far claimed to do same thing. I was skeptical as soon as it started talking about chinese herbs and such, but I figured it was worth a shot. I started giving this as prescribed from wellvet ALONG WITH Georges Aloe Vera juice, which is said to help a lot for acid reflux sufferers (I found a few people that said it worked great for their cats). All the while praying, within a few days I started noticing a drastic improvement. She was licking her lips less, and was able to relax for longer periods of time without jumping up in pain and crying. She vommitted once within a several day period. Several days later, NO MORE CRYING, and instead of hiding behind the bedroom door licking her lips the whole night, she started sleeping with me at night like she used to. Now, several weeks later, she is literally 90% better. NO MORE VOMITTING AT ALL, is in very little pain, VERY little lip licking and only very occasionally at that. She also gets much more rest, and has put on several pounds and is back above her normal weight and has a nice chubby belly. My cat suffered daily for 2 long years during this whole process before I found this product along with the Ulcinex. The aloe vera juice on its own didn't seem to completely do the trick, so I think its the combination of the two that is really effective. I only hope that no permanent damage has already been done, but now I have my cat back and don't have to suffer through losing a great wife and a great cat. If you have a cat with severe stomach issues, you owe it to yourself and your cat to try this along with the Ulcinex. It wouldn't hurt to get a great quality canned food like Natures variety either. Metagenics - Ulcinex - 90 Tablets Nature's Variety Canned Cat Food, Feline Instinct Duck Diet (Pack of 24 3 Ounce Cans) UPDATE: I want you all the know that the Ulcinex is really what was helping. 1 quarter tablet with every meal, and my cat hasn't vomitted in 10 months