Can a registered nurse inject Botox or filler in Wyoming?

Short answer
The cited rules do not settle this — they confirm an APRN may prescribe and administer prescription drugs, and that administering such drugs is practicing medicine, but nothing here sets out whether an RN may inject under a physician's order or delegation.

Wyoming writes prescribing authority into the DEFINITION of the advanced practice registered nurse. An APRN is a nurse who may prescribe, administer, dispense or provide nonprescriptive and prescriptive medications, including prepackaged medications, except Schedule I drugs; who has responsibility for the direct care and management of patients and clients in relation to their human needs, disease states and therapeutic and technological interventions; who holds a doctorate or master's degree in nursing or an APRN specialty, or completed an accredited APRN educational program before January 1, 1999; and who has completed an advanced program of study in a specialty area, passed a national certification examination in that same area, and been granted licensure by the board to practice as an APRN. The authority and the qualifications are stated together in one definition, so each element is a condition of the role. Physician assistants are described differently again: the statute says a physician assistant is an individual who practices medicine, qualified by education, training and experience to provide a broad range of diagnostic, therapeutic and preventive services, who may collaborate with or refer to the appropriate member of a healthcare team — and it puts the degree of collaboration at the practice level, which may include decisions made by the employer, group, hospital service or the credentialing and privileging systems.