Need help with buying medication

Hello, It is embarrassing that it came to this but I am now desperate. I have PTSD, Bi Polar and OCD. The only medication that works for me an old anti depressant that is not covered under my insurance and cost just over $700. I do not have a job now because of my illness. With the medication I will be able to work as this was the case when I had the medications last time. This is the problem I need the medication to be able to get out and get my job back but I need the job to be able to pay for the medication. I am at my most desperate, I am sorry for asking for anything but I am really down on my luck now. Any help will be greatly appreciated. Thank you Dave