I'll tell you a tried and true remedy that I use for that "start of a cold" feeling one gets...you know, post nasal drip, congested sinuses, sore throat, cough...
Run a hot bath (hot as you can stand), prepare a hot drink (doesn't matter what it is but the honey mixture sounds excellent), sit in bath and drink hot drink(
don't get your head wet). When you are so hot you can barely stand it, get out, put Vick's Vaporub on your feet (yes, your feet!) and your chest, cover feet with socks, dress as warmly as you can, climb under a ton of blankets and wrap them closely. At this point you should be so uncomfortably hot you feel like you're in a sauna. Now, I always take a couple Benadryl with this so I can sleep through this uncomfortably hot treatment!
In the morning, I feel 100% better! Many of you will say it was probably the Benadryl, but, trust me, Benadryl doesn't work THAT well! Actually, from a nursing standpoint, this treatment speeds up your metabolism, speeding up your immune system as well, resulting in a quick and better fight against whatever is trying to invade your system. I have tried this time and again and it works!
I also try to power up on orange juice during this time(the "just getting a cold time"), as just taking the Vit. C caps don't seem to work as well as the juice.
Just a little home remedy I like to use. Haven't had to take antibiotics at our house for nigh on 10 years now! Well, that could also be attributed to a change in our eating habits, as well, but this really works, folks!