Sekine K, Kawashima T and Hashimoto Y. Comparison of the TNF-a Levels Induced by Human-Derived Bifidobacterium longum and Rat-Derived Bifidobacterium animalis in Mouse Peritoneal Cells. Bifidobacteria Microflora 1994;13(2):79-89.
Many folks eat high lysine foods prior to or during a cold sore event, and avoid high arginine foods. For many folks, healing cold sores fast has been as simple as taking 1,000 milligrams to 3,000 milligrams of lysine in capsule supplements during an outbreak. High lysine foods to eat are most meats and dairy products.
How Long Do Cold Sores Last With Treatment? If your cold sore has lasted longer than two weeks, or the sore is too painful or unsightly to endure, go to the doctor. Your doctor can prescribe treatment to heal your cold sore in five to seven days, like Denavir and Xovirax. Abreva, an over-the-counter cold sore remedy available from the pharmacist's counter at most drugstores, is a topical cold sore medication that is FDA-approved to shorten the healing time of your cold sores.