If we are talking about common antidepressants like reuptake inhibitors, you have an immense array of alternatives at any time of the day.

I live in eastern europe, we have a shit economy. I get my SSRI medication for a few bucks a month, never had a problem.

To be honest, leaving antidepressants because you suspect that everything will fall apart sounds like some extreme form of prepping. Why not just have a years worth of pills in advance and keep taking the helpful medicine until you can?