- This article is about the Hippocratic Oath. You may be looking for the DS9 episode "Hippocratic Oath".
The Hippocratic Oath was an oath taken by Human medical doctors.
In 2371, the first sentence of the Hippocratic Oath ("First, do no harm") passed through Doctor Fitzgerald's mind when he was fatally injured during USS Voyager's transport into the Delta Quadrant by the Caretaker. (VOY novelization: Caretaker)