If I may, following discussions about "antidepressants", I'd like to give my views in the hope it clarifies ja number of things. Firstly there are loads of anti depressants specifically formulated to help with depression. I say "specifically" because there are lots of anti psychotics, probably all , that will help with mood, not just though processes. So loads of medications to help.
Your Dr or psychiatrist will prescribe you medication dependent on a number of factors. The side effect profile for example. If a medication is known to make you more drowsy, they'll unlikely prescribe it to someone who is already complaining of feeling tired all the time. Also believe it or not there are a number of anti depressants that side effects include "increased probability of suicide". Your BMI, history, family history and lifestyle will also be factors at to which medication you are prescribed. A good practitioner will look at your life "holistically", a fancy word for looking at everything that is going on in your life.
I will close with a note of caution but I'd like to implant a thought for you to think about. When a patients of mine is fist prescribed an anti depressants, I'm always a little anxious and here's why. I've often had patients say "Terry, I don't even have the motivation to kill myself. I'm just at rock bottom". Here's my worry and it may be just me being overly concerned, but I always worry that their prescribed medication sees my patients improve and their mood lifted just enough they find that "motivation and get up and go" to carry out their "plans". It's just a worth of mind.
Please don't stop your medication suddenly, but keep taking them and visit your GP for a consultation. It may be dose issues or you may require a change, but there is ALWAYS help out there. Take care all, I hope this has been offered some help.