I took anti-depressants (and similar) after a suicide attempt and put into ward. The emotion they took me to is not what I would say "anti-depressed." I was still depressed. There was still anxiety. There was still the hunger for suicide. What was done instead is a kind of "loss of caring." There would still be that crushing darkness, but it would not drive me so much. There would still be that crippling terror, never leaving, but it would not deter my actions so much. Every night my friend would call to me again, but his voice more quiet. Then come the side-effects.
I would not recommend this life to one who can avoid it. This was my private hell and I would not return there willingly. It did not eliminate my despair. Just me more dull and numb to it.
But maybe you are not like me.