Mississippi Code Title 73. Professions and Vocations § 73-21-115

(1) Every prescription written in this state by a person authorized to issue such prescription shall be on prescription forms containing two (2) lines for the prescriber's signature. There shall be a signature line in the lower right-hand corner of the prescription form beneath which shall be clearly imprinted the words “substitution permissible.” There shall be a signature line in the lower left-hand corner of the prescription form beneath which shall be clearly imprinted the words “dispense as written.” The prescriber's signature on either signature line shall validate the prescription and shall designate approval or disapproval of product selection.

(2) If a prescription form which does not contain the two (2) signature lines required in subsection (1) of this section is utilized by the prescriber, he shall write in his own handwriting the words “dispense as written” thereupon to prevent product selection.

(3) A pharmacist licensed by the Mississippi State Board of Pharmacy may dispense a one-time emergency dispensing of a prescription of up to a seventy-two-hour supply of a prescribed medication in the event the pharmacist is unable to contact the prescriber to obtain refill authorization, provided that:

This emergency dispensing shall be done only in the permitted facility which contains the nonrefillable prescription.