Final answer:
Disposal or destruction of controlled substances must be recorded by a pharmacist on DEA form 41 and witnessed and signed by another pharmacist.
Step-by-step explanation:
The answer to the question is form 41. Disposal or destruction of controlled substances must be recorded by a pharmacist using DEA form 41, which is used to document the destruction of controlled substances. This form is used to maintain accurate records and ensure proper handling and disposal of controlled substances. Another pharmacist must witness and sign the form to verify the disposal or destruction process.