Hello, XXXXXXXXXXX
Yes it is true that you can give your cats a 1/2 tablet Pepcid AC to help calm stomach acid and nausea. So go ahead and start that. You can crush the tablet in food if that is easier. Use only regular strength Pepcid AC. Rolaids, tums, pepto bismol, etc. are not safe cat approved OTC medications.
It is the grass that is causing the vomiting. There is an enzyme in grass that makes dogs and cats vomit. Usually excess grass eating can be from the lack of fiber in their diet. So you can start adding fiber supplements by mixing a tsp of metamucil or benefiber in the cat food once a day.
You can also get cat grass at many pet supply stores. This is special grass that will not upset the stomach and grows in pots for indoor use.
Sincerely, XXXXX
I don't think further tests are needed. He sounds healthy, just has an obsession with grass, and many cats do.
I am sure if the tapeworm was treated by a vet, it is gone. Tape worm is a pretty easy to manage parasite. Just watch for any tapeworm segments in his poop or around the anus in his fur. That is usually the first thing noticed with tapeworm.
As for the fiber supplement, it isn't a big deal if both cats get it. It will not hurt anything if the one without the problem gets it too. The food are using is a very goof food. I know it is high in protein, low in carbs, and grain free, which is all good. But cats, just like, people sometimes need special extras in their diet.
Many people think that cats and dogs eat grass because they have an upset stomach and need to throw up. That is not true. The grass causes the upset stomach, and eating grass is a way of getting extra fiber. It is like some cats will lick rocks or stones if they need more iron. Their body knows what it needs and triggers instincts to get it.
If he is not loosing weight, it's fine. If he starts loosing weight then you need to address it with your vet.
I have a chronic vomiter too. He goes outside, eats grass from time to time and hunts EVERYTHING that moves. It's the hunting and eating of the prey that causes his vomiting. It is pretty gross!
You sound like a terrific caring cat mommy :) and you're not in my hair. I want to make sure all your questions and concerns are addressed properly. If you need anything else please don't hesitate to let me know.
Micki
Expert in cat behavior and health
Expert in cat medical and behavior issues.
I understand.
If you are moving soon anyway trying to transition him now may is a good idea to get used to being inside. If there are adjustment issues when you move with either of your babies, get some Feliway. This is a pheromone that you can get at Pet Smart or online. It does a great job relieving stress and anxiety in cats, and moving can be a very stressful situation for cats.