That might work for a cold (important, a runny nose is often beneficial for cleaning out the cold). But allergies (and sometimes colds) often cause sinus infec

That might work for a cold (important, a runny nose is often beneficial for cleaning out the cold). But allergies (and sometimes colds) often cause sinus infections, which will get worse if untreated. For me, pseudoephedrine can quickly reduce a sinus headache during allergy season (aligned with rainy season for fun humidity changes), and can be used before resorting to antibiotics if a sinus infection presents.