Md. Code, Criminal Law § 5–703

(a) This section does not apply to the mailing of a drug to a person who under State law is authorized to disburse, prescribe, or administer the drug.

(b) A person may not send by mail a prescription drug, controlled dangerous substance, or medicine to “Resident”, “Occupant”, or to a named addressee who has not requested that the prescription drug, controlled dangerous substance, or medicine be mailed.

(c) A person who violates this section is guilty of a misdemeanor and on conviction is subject to imprisonment not exceeding 6 months or a fine not exceeding $500 or both.