Decongestants narrow the swollen blood vessels that cause congestion. They work best against stuffiness caused by allergies or viruses. Decongestants come in many forms, including tablets, liquids, ...
To find the best over-the-counter (OTC ... Antibiotics treat infections caused by bacteria, not viruses. Congestion, or a stuffy nose, is a hallmark symptom of colds and flu. It's caused by swelling ...