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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.
Dr. Peter Karsant Dr. Karsant. Cold Sore: It will not hurt or help however unless you put it on your finger you will contaminate the stick or jar and then it needs to be dumped. Cold sores heal in 7-10 days by themselves or you may buy an otc drug like abreva which will shorten the time to heal.