It may not be necessarily the best but it is popularly used to treat cold sores as it is natural and has no side effects. You should leave the ear wax on a cold sore overnight. To get tips on how to treat a cold sore with ear wax, visit http://www.ehow.com/how_4712695_cure-cold-sore-earwax.html.
LOL....Lexi too funny! But, to answer your question, cold sores are viral, so anything you can do to boost your immune system while you have a cold sore should be beneficial as well. Such as, vit. C, zinc, garlic, Echinacea , extra water, extra rest. The product Abreva is supposed to be pretty good too (according to my friend who gets them) Avoid acidic things though...like tomato based foods or orange juice as they might irritate a cold sore. Also, stress triggers them, so try deep breathing and relaxation techniques as well. Good luck!