I was feeling like you a couple of years ago, after years of various stages of anxiety I thought I'd try medication and the doctor gave me a link to the NHS website with all the different choices of antidepressants and said pick one. I read all the different side effects, dosages etc and choose Citalopram. I also know a few relatives and friends on this one, it seems popular. Got it home read the leaflet and was too scared and anxious too take it!
I then signed up for Talking Therapy sessions, there was a few weeks waiting list but it was worth the wait and I'd definately recommend it. You could try the meds while waiting for the therapy.