Decongestants are drugs that decrease nasal congestion. Nasal decongestants can help with snoring, colds, and allergies. Side effects include nervousness, difficulty sleeping, and increased heart rate and an increase in blood pressure. Follow the links below to find WebMD's comprehensive coverage about how decongestants work, who needs them and why, and much more.
Decongestants and Antihistamines for the Common Cold
Learn more about decongestants and antihistamines -- and whether they'll relieve your cold symptoms.
Learn more about decongestants for allergy symptoms.
What Is Sinusitis
Is it a sinus infection? Learn more from WebMD about the symptoms, diagnosis, and treatment of acute and chronic sinusitis.
Heart Disease and Colds
If you have heart disease, catching a cold may lead to serious problems. WebMD tells you how to prevent serious cold complications and stay well.