I'm not giving advice as I made my first post earlier today, but just to relate a story.
I quit about a year and a half ago for approx. a month. Now I too have been on anti-depressants for 15 years. After a month not only had the anti-depressants really started to take effect again, but I was shocked as to the increase in my sex drive after only a month.
Now I realize the irony in the above statement, based upon the fact that I resumed drinking, but it is a point which needs to be made.