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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.
Cold sores last for around seven to 10 days, but can sometimes take two weeks or longer to heal. They're sometimes confused with canker sores, which are not contagious but produce small, painful ulcers in soft tissues of the mouth, such as the tongue and the walls of the mouth. Natural Cold Sore Remedies. While there's no cure for cold sores, there are a few remedies that are being explored to minimize outbreaks, control the pain, or promote healing. 1) Lemon Balm. Lemon balm (Melissa officinalis) is an herb in the mint family that may promote the healing of blisters.