3 ms·Are you talking about the therapy where they inject low doses of allergens? Doesn't that take ages?by elric 6y agoAre you talking about the therapy where they inject low doses of allergens? Doesn't that take ages?seehafer 6y agoYes. ~5 years. Very very worth it though.graeme 6y agoHow did you determine the correct allergen? I do get a stuffy nose when I sleep. Not sure what causes it.