Pharmacology Atropine is added to commercial preparations containing diphenoxylate to: A Potentiate its anti-spasmodic effect B To reduce excretion of salt and water C To prevent overdosage and discourage opioid dependence D To prolong its duration of action 💡 Explanation Atropine is added to commercial preparations containing diphenoxylate to: ✓ Correct Answer: C. To prevent overdosage and discourage opioid dependence