Complex sentence: Certain preparations of some drugs, such as hydrocodone, are mixed with an anticholinergic agent to deter intentional overdose, although at normal dosages it can help the opiate itch.
Split into simpler sentences: Certain preparations of some drugs, such as Hydrocodone, are mixed with an anticholinergic agent to deter intentional overdose. Although at normal dosages it can help the opiate itch.