Since big business is sometimes about inventing a costly, synthetic drug that will most likely be used to control CMV, is anyone thinking of the alternatives, perhaps testing monolaurin and oregano oil or other oil and plant extracts on Cytomegalovirus (CMV). " The good thing is that monolaurin doesn't let you develop any type of drug resistance. If you are concerned about your particular cold sore outbreak, talk to a health professional. We should, instead, be focusing on eliminating the cold sore symptoms and preventing future cold sores.