Mo. Rev. Stat. § 167.630: Epinephrine delivery systems, school nurse authorized to maintain adequate supply — administration authorized, when.

1. As used in this section, the term epinephrine delivery system has the same meaning given to the term in section 167.627.

2. Each school board may authorize a school nurse licensed under chapter 335 who is employed by the school district and for whom the board is responsible for to maintain an adequate supply of epinephrine delivery systems at the school. The nurse shall recommend to the school board the number of epinephrine delivery systems that the school should maintain.

3. To obtain epinephrine delivery systems for a school district, a prescription written by a licensed physician, a physician's assistant, or nurse practitioner is required. For such prescriptions, the school district shall be designated as the patient, the nurse's name shall be required, and the prescription shall be filled at a licensed pharmacy.

4. A school nurse, contracted agent trained by a nurse, or other school employee trained by and supervised by the nurse shall have the discretion to use an epinephrine delivery system on any student the school nurse, trained employee, or trained contracted agent believes is having a life-threatening anaphylactic reaction based on the training in recognizing an acute episode of an anaphylactic reaction. The provisions of section 167.624 concerning immunity from civil liability for trained employees administering lifesaving methods shall apply to trained employees administering an epinephrine delivery system under this section. Trained contracted agents shall have immunity from civil liability for administering an epinephrine delivery system under this section.