This is a tough one to rate because, on a scale concerned only with it's effectiveness, Afrin is an easy 5 it's even a 5+++ but on the other hand this is nasty stuff. Very strong and very addicting. On at least two different occasions I had tried this for an extended cold or flu or whatever it was and even though they tell you not to use it for more than 3 consecutive days (which should tell you something right there if they're so concerned to warn you) I did and found that when I stopped using it I was even more congested and had more trouble breathing than I had had from the cold. Great for very quick releif and a good nights sleep but definitely use sparingly.