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A Sharecare Ad Target User , Administration, answered. An outbreak of oral herpes, or cold sores, should go away on its own in about one or two weeks. Antiviral medications can help them heal faster if taken early. Talk to your doctor if your cold sores do not go away after two weeks. Helpful? 1 person found this helpful.
Still, while you can't do much about the way a cold sore looks, you can do a few things to help decrease discomfort, speed healing, and keep it from coming back. You can even take steps to prevent passing on your cold sore to others. Here's how.