I've bought allergy medication at the drug store before and they don't work for me. Is this the same thing as phenylephrine, which literally doesn't do anything? or is it different because my particular allergies did not respond to this medication? I don't think these two are the same thing, and it makes far more sense that if there is a medication added to a drug, being sold in a drug store, for treating a particular symptom, it should have actual clinical evidence it treats that symptom.

Or am I just suppose to try the dozen different gobbledegook ingredients on the shelf before figuring which one isn't bullshit while wasting my time on half of them?