Pills or syrups. If you see the letter “D” at the end of a medicine’s name, it means it includes a decongestant. Look for products with phenylephrine or pseudoephedrine. (You may have to ask for these. They’re still considered over-the-counter but are often stored behind the counter.)
Nasal sprays. Products with oxymetazoline and phenylephrine may work faster than pills or syrups. But if you use them for more than 2-3 days in a row, your congestion could get worse.
Cough suppressants , like dextromethorphan, can provide relief for a short time. They work on the part of your brain that controls the process.
Expectorants, like guaifenesin, can break up congestion in your chest by thinning the mucus in your airways. This way, when you do cough, you can get rid of phlegm more easily. Drink plenty of water if you take this medicine.