“A prescription drug shall be dispensed only by a practitioner to an ultimate user...” Haw. Rev. Stat. § 328-16(b)(3)

The director of health may “remove drugs subject to §§ 328-15.4 and 328 17 from the requirements of subsections [a-d] when such requirements are not necessary for the protection of the public health.”
Haw. Rev. Stat. § 328-16(h)(§ 328-15.4 concerns habit-forming drugs for use by a person ; § 328-17 concerns new drugs).

EPT is potentially allowable.

The director of health is authorized to waive prescription requirements that may otherwise preclude EPT to protect the public’s health. Nothing suggests that this waiver be granted only for exigencies.