Promethazine? That's for vomiting. Wierd choice. I mean, it IS an antihistamine, but I've never actually seen it used for that purpose. Guess I just learned something today. Thanks.

Oh, normal cold 7-10 days. Enjoy. Flu can last a bit longer, usually 14 days. Taking anti-virals shortens the duration for approx 24 hours, IF taken within 48 hours of symptom onset. Afterwards they're pretty useless (according to clinical trials). That's probably why most folks don't get the antivirals.