Wisconsin MPJE (Pharmacy Jurisprudence) Practice Exam

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What is the maximum amount of diphenoxin allowed per dosage unit in a Schedule 5 medication?

  1. 0.1 mg

  2. 0.5 mg

  3. 1.0 mg

  4. 2.0 mg

The correct answer is: 0.5 mg

Diphenoxin is a narcotic medication used to treat diarrhea. Schedule 5 medications are controlled substances with a lower potential for abuse and addiction compared to other schedules. Therefore, the maximum amount of diphenoxin allowed per dosage unit in a Schedule 5 medication is limited to 0.5 mg to prevent misuse and potential harm. Option A, 0.1 mg, may not be a sufficient dosage for therapeutic effect. Options C and D, 1.0 mg and 2.0 mg, respectively, are higher than the allowed maximum amount and may increase the risk of abuse and dependency.