If household allergies are a problem Keep pets and plants out of your home, or at least out of the bedroom. Enclose pillows, comforters, and mattresses in zippered vinyl casings. Dehumidify the basement to discourage mold growth, and empty the dehumidifier water tank often. Address your symptoms. Base your drug selection on your most bothersome symptoms.
Antihistamines reduce sneezing, runny nose, and itchy eyes, nose, and throat.
If congestion is your worst problem, select a decongestant. Several products combine antihistamines and decongestants. People react differently to these medications, so if you aren't finding relief after about 5 days of use, consider trying a different one. See your doctor if symptoms worsen or you find that you're increasing the amount of medication to control them. A doctor may perform medical tests to target the likely cause of your allergy.