Antidepressants can cause mania or hypomania which will make you want to drink to "come down" especially if you are undiagnosed bipolar.

When they started me on SSRI's 6 years ago my addiction went from manageable to the moon. 2 years ago I was diagnosed bipolar, never taken off the SSRI's/SNRI's until 2 months ago. After being taken off them my desire to use drugs has been cut drastically.