To stop sneezing and dry up your runny nose and watery eyes, take an antihistamine, which blocks your body's release of histamine, a chemical that causes these symptoms. Antihistamines frequently cause drowsiness so save these for bedtime or at least for when you won't be driving or doing anything that requires coordination. To unstuff your nose take a decongestant. But they shouldn't be used for longer than three days. Additionally, excessive usage of local decongestants can result in a condition called turbinate hypertrophy in which the ridges inside your nose get enlarged and more prone to repeated infections and obstruction.
Lozenges can also combat coughs.
Many of them contain topical anesthetics that slightly numb your sore throat, which relieves your need to cough. Menthol or camphor rubs have a soothing, cooling effect and may relieve congestion and help you breathe more easily, especially at bedtime. Apply Vicks VapoRub or a similar product to your bare chest, cover up, and get a good night's sleep. When you need to cough, go ahead and cough. When you need to blow your nose go ahead and blow.