Novartis Clomicalm

It is prescribed for my Siamese queen when she is in heat, and it works. She has little to no side effects, and her incessant and loud calling is more bearable for her human and feline housemates. She only gets it when in calling, not continuously. This means only every second or third week.
It helped my girl and me cope with her calling.
Price

My poor persian was having issues pooing on our carpet so our vet suggested clomiclam as he may have an anxiety issue. He was completely spaced out all the time and would just sit there and stare. to top it off he still pooed on the carpet. Feliway was a better option for us
My cat was nicer to me
It turned him weird