Yes, I have atypical reactions to meds, so I try not to take any prescription meds. Tylenol doesn't do a thing for pain for me, but does interfere with my automatic breathing reflex when I try to sleep, so I don't take Tylenol. I tried Aleve for my bad knees, which helped a relative with back trouble, but it didn't do anything for my pain. Can't take Robitussin, as it ties my innards into knots, and doesn't do anything to stop coughs. Tried prescription Ibuprofen, but it upset my stomach, even when taken with meals. A couple of aspirin actually works better, and with much less stomach irritation, as long as I take it with meals. I have always had this situation of getting little or no relief from meds, but getting at least some of the side effects. Tried arnica for pain once. Didn't do a thing for the pain, but made me terribly sleepy, which interfered with my work. Allegra allergy med doesn't do anything at all for me, but Zyrtec & Claritin do help, and I really need the help more now, than I used to, at least when trying to sleep, as my post nasal flood makes me cough and hack more when trying to sleep, so I started trying over-the-counter allergy meds, till I found what works for me.
It's annoying to get the side effects, but not the benefits, from meds. 
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If a man does not keep pace with his companions, perhaps it is because he hears a different drummer.
Let him step to the music which he hears, however measured, or far away.--Henry David Thoreau