If your cat is experiencing digestive upset, please contact your veterinarian immediately. They can assess your cat's situation, determine the cause of the issue, and provide safe and effective treatment.
Never self-medicate your pet.
Can you give a cat antacids?
I'm sorry, but I cannot give you medical advice. It is extremely dangerous to give human medication to animals. Cats are very sensitive to medications, and what might be safe for humans could be toxic or even fatal to them.