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.
All nonprescription products are FDA approved to shorten the healing time of a cold sore. FACT: Currently, the only nonprescription healing product approved by the FDA to shorten both healing time and the duration of symptoms is AbrevaÂ® Cream when used at the first sign of a cold sore.*. *Median healing time 4.1 days.