m no proffessional, but that goes in the same Category as Celexia (spelling)
prozac, and lexepro. Very low side effects. Which would tell me that they take a little time to work. I think you'll see with zoloft you'll have very successfull results. Also have read about it being an antiobsessive antidepressant, along with prozac...
Give it more time, it'll work, wouldn't even doubt ater consultation with a proffessional that you could go back to your 50Mg's.