At what schedule level are atropine/diphenoxylate categorized?

Atropine/diphenoxylate is categorized as a controlled substance under Schedule V. Schedule V substances are characterized by their lower potential for abuse compared to substances in higher schedules and typically have accepted medical uses. In the case of atropine/diphenoxylate, it is primarily used as an antidiarrheal agent. The combination of diphenoxylate, an opioid, with atropine is designed to discourage misuse; atropine has no therapeutic effect in the doses used for this indication but can cause unpleasant side effects if taken in higher amounts, reinforcing the medication's proper usage.

Understanding the scheduling system is crucial for comprehending the control measures applicable to certain medications. Schedule V commonly includes preparations that contain limited quantities of some narcotics and are often exempt from some of the stricter regulations that apply to higher schedules (like Schedule II or III substances), which may carry a greater potential for abuse or dependence.