Many antidepressants have sexual side effects. The ones that don't tend to be very stimulating. My concern is that if you know your problem is owing to hormonal problems, the antidepressant won't treat that, so what's the point of taking it? Proper treatment of the thyroid should get rid of the problem if indeed that's the source. Of course, the only way to find out is to stop taking the antidepressant to find out -- if you do, make sure you taper off as slowly as you need to so you don't have the side effects of quitting. But again, if the thyroid is the problem, taking an antidepressant is just taking an additional drug, and because it can make you not care about the thyroid problems you might not be as able to determine whether the treatment of your thyroid is appropriate. Up to you, but I'd discuss it with your doc.