There are drug regimens without such dire consequences. I am following one such myself. The drug issue should be one additional factor in the decision to venture out solo or not. It is a good idea to consult with your physician about the potential consequences and suitable countermeasures, like taking partial doses.

If you are dealing with mandatory meds, the issue is really how to keep a secure backup stash available and ready. I am inclined towards a waterproof capsule on a neck lanyard