Interactions with Benzodiazepines and Other CNS Depressants Tell patients and caregivers that potentially deadly additive effects could occur if acetaminophen and codeine phosphate tablets are used with benzodiazepines or other CNS depressants, such as alcohol, instead of to employ these drugs concomitantly unless supervised by a healthcare provider (see WARNINGS https://phase2directory.com/listings13177751/not-known-factual-statements-about-cod%C3%A9ine-injectable