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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.
How to Avoid Spreading Cold Sores. Hereâs how you can avoid spreading cold sores to others: Donât pucker up. You can spread cold sores simply by getting up close and personal with your loved ones. Give a kiss anywhere, but especially the mouth, and you could easily pass on the virus.