Interesting.
I take Lomotil daily. Lomotil is now a Schedule V drug due to possible abuse.
Explanation
Is Lomotil a controlled substance? Lomotil is a Schedule V controlled substance, which means it has a medical use but may be misused. It contains small quantities of narcotics (powerful pain relievers also called opioids). Diphenoxylate, one of the ingredients in Lomotil, is itself a Schedule II controlled substance.
It's interesting that Peter Schneider chose that particular medication, to write on the check. Wonder what made him choose that?