this depends on your symptoms. if you have nasal or sinus congestion then a decongestant can be helpful. if you have drainage -- either a runny nose or postnasal drip or itchy watery eyes -- then an antihistamine may be helpful. over-the-counter antihistamines often make people drowsy; decongestants can make people hyper or keep them awake. antihistamines can make secretions thick which can be a problem for people with asthma. keep in mind that both these medications may interact with other drugs you may be taking for conditions such as heart disease and they may worsen some conditions. discuss with your doctor or pharmacist which cold medication may be best for you.
should i take a decongestant or antihistamine for a cold or the flu?