Are all drugs controlled substances (CS)?
No, most drugs are considered pharmaceuticals and are not CS. Examples of drugs that are not CS are Donepezil, Xylazine, and Atropine. Search the U.S. Drug Enforcement Administration (DEA) List of Controlled Substances (PDF) to see if a drug is considered a CS. One way to tell is to check the label for the letter “C” with a Roman numeral I through V next to it (example: C-IV).
