As someone who has been on the prescribing end of things--can't you just check back with the patient to see how they are feeling while they are taking it? I am not a doc but I assume there are things you know to look for and, as a patient, I feel like I am the best at knowing how the meds are effecting me. It seems like when I am first prescribed something, I am not locked into it (probably wouldn't be instantly addicted ). Though I know we patients are all different but maybe think of it as a partnership where the patient also has responsibilities and that none of us are perfect and if you use this experience to slow down next time then you have nothing to feel guilty of...

And far as relationships go, some of us just don't know till we know. I hope you can try to look forward rather than backward sometime soon.