Hawaii Revised Statutes Division 5. Crimes and Criminal Proceedings § 712-1240.1

(1) It is a defense to prosecution for any offense defined in this part that the person who possessed or distributed the dangerous, harmful, or detrimental drug did so under authority of law as a practitioner, as an ultimate user of the drug pursuant to a lawful prescription, or as a person otherwise authorized by law.

(2) It is an affirmative defense to prosecution for any marijuana-related offense defined in this part that the person who possessed or distributed the marijuana was authorized to possess or distribute the marijuana for medical purposes pursuant to part IX of chapter 329.