How Long Does 1 Tablet Of Cerenia Last In Dogs?

How Long Does 1 Tablet Of Cerenia Last In Dogs? Maropitant blocks the action of substance P- a neurotransmitter involved in vomiting—in the central nervous system. By blocking substance P from binding to the NK1 receptor, maropitant can prevent vomiting. Cerenia starts working quickly to prevent or treat your pet’s vomiting. It’s effective for about