Yes & No.
Meds can be a godsend, or a huge trial, but most often are both. Meaning that no one reacts the same way to them (there are literally hundreds of options, although probably only 50 or so common ones), and the only way to find the "right" one is to make educated guesses, and experiment.
The other thing to consider is that, as a first responder, many of those meds mean he won't be able to work. At the very least not in the field/ in any position where people's lives are in his hands (either patients or crew), and often not at all. Other meds -even if they're approved for on duty use- he won't be able to work because they flatten him, or affect his judgement, or make things worse.
Which makes the medication route very full of "ifs, ands, buts, & maybes".