Sekine K, Kawashima T and Hashimoto Y. Comparison of the TNF-a Levels Induced by Human-Derived Bifidobacterium longum and Rat-Derived Bifidobacterium animalis in Mouse Peritoneal Cells. Bifidobacteria Microflora 1994;13(2):79-89.
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.
The virus resides deep in the nerve roots and may reactivate at a later time, causing the same symptoms and signs in the same location. Cold sores usually go away within one to two weeks, but they can be treated with antiviral medications, like acyclovir or topical medications such as docosanol , to reduce pain and shorten healing time.