the laws governing the use and supply of drugs for medical purposes are not part of the misuse of drugs act. a different set of categories apply, which are defined in the misuse of drugs regulations. this sets out five schedules, each with their own restrictions. these restrictions say that a person can possess and use certain drugs if they have the proper prescriptions for them. a prescriptions must be given by somebody who is licensed to provide it (e.g., a medical doctor). the drug itself must be supplied by somebody who is licensed to supply it (e.g., a pharmacy).