Codeine has been documented to indicate no proof of carcinogenicity or mutagenicity in many different exam systems, including the micronucleus and sperm abnormality assays as well as the Salmonella assay. Promethazine was nonmutagenic inside the Salmonella examination system of Ames.Use Tylenol w/ Codeine (acetaminophen and codeine tablets) as requ… Read More