Over the course of a few hours, a client receiving lithium carbonate reports being nauseous, then drowsy and "achy." what action should the nurse take when considering the client's next scheduled dose of lithium?

The nurse should post pone the next scheduled dose and examine what's the probable cause if whether the lithium is the one responsible of making the side effects or there is another factor that made the client feel nauseous, drowsy and even feel achy.