I had severe depression long before I drank, was on meds for it for years too, but they didn't help while I was drinking a depressant - duh! I was drinking to medicate the anxiety and depression but of course it only made them worse.
Once I got sober for good my depression became more manageable and my meds could do their job.
I still have bouts of bad depression and sometimes think of drinking it away, but haven't done so as I know how much worse the depression would be if I drank.
I see a counselor once a week and she's a huge help in staying sober and managing my life. I'll probably always be on meds and that's ok by me as it makes my life so much better.