Fending off a cold

My husband said that there is something going around in his office and he feels lightheaded. So, I am going to use my herbal expertise to help him fend off a cold. What I like to do in these circumstances is drink lots of green tea with lemon, honey, and a dash of cinnamon. I am also going to have him eat at least one more orange this evening. He is clearing his throat a lot, too so I may give him some peppermint tea to help relieve the congestion.