Can a registered nurse inject Botox or filler in Maine?

Short answer
The cited rules do not settle this — they say only that a nurse practitioner or nurse midwife qualifying as an advanced practice registered nurse may prescribe and dispense drugs under board rules; nothing cited addresses what an RN may inject.

Maine is not a day-one independent-practice state for nurse practitioners, and this is the section to read before staffing. a certified nurse practitioner qualifying as an advanced practice registered nurse must practice for AT LEAST 24 MONTHS under the supervision of a licensed physician or a supervising nurse practitioner, or be employed by a clinic or hospital with a medical director who is a licensed physician, and must submit written evidence to the board on completing that clinical experience. Certified nurse practitioners and certified nurse midwives may prescribe and dispense drugs or devices in accordance with board rules. Advanced practice registered nursing is defined by reference to the board’s own rulemaking on scope and standards, and expressly includes consultation with or referral to medical and other health care providers when required by client health care needs.