How long must I be off trazodone before talking first class medical

[Piper2897m]

I have been on trazodone for about 2 years, I have not been flying for a while due to financial reasons, this caused me to be despressed and thus taking trazodone. I have come into some money, enough to complete my aviation studies. I have an I/R and CPL and Im about to study my ATPL frozen. First I would like to get my first class medical out of the way. My question is how long Must I be off the trazodone medication before I take the first class medical (CAA) Im curreny taking 50mg, slowly comming off them.

Thanks