My beautiful rescue Maine Coon cross had been badly treated before I found her. After 3 years of love and patience, she's fine with me, but still disappears as soon as anyone visits. She's terrified of fireworks and practically any loudish noise. Zylkene was recommended by the vet, and I use them before and during noisy times, along with a Feliway plug-in at all times. It's a natural, gentle treatment for anxiety, and it works, without any drowsiness at all.