It is normal for cats to have no appetite after taking cimetidine tablets. The medication is very irritating to the stomach. Taking antibiotics is commonly known as anti-inflammatory drugs, antibiotics can be divided into the following categories, the first is the gastrointestinal irritation of antibiotics, this type of antibiotics will cause gastrointestinal mucosal damage in cats and reduce the cat's appetite, oral administration of this type of antibiotics should be accompanied by the protection of the gastrointestinal mucosa of the drug.