Dexchlorpheniramine
"Whenever I suffer from common cold/allergic running nose without cough, Polaramine gives me relief within two hours. When it is very urgent, there is appointment with customers/vendors or important meeting, this is the only medicine I take. It requires dose of 2 tablets (2mg) one time only. I did not need second dose any time. I have been using these tablets for more then 10 years. There is no side effect that I faced. I feel little drowsiness, but I can do my normal office work/study without any hassle."