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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.
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.