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.
Cold sores are caused by a Herpes Virus (HSV-I not the genital variety HSV-II). Abreva is a topical medication that can help fight and speed healing of cold sores. Abreva is over the counter in the USA. Neosporin will not keep the virus from spreading but could help it from becoming secondarily infected with bacteria. Neosporin contains 3 antibiotics: Neomycin, Bacitracin and Polymyxin.