The effect of different types of medicine information on side effect reporting

Nocebo information: Participants randomised to this group will be shown a 4-minute animated video that explains how the nocebo effect occurs. Participants will be informed that when we are told about medicine side effects, we come to expect side effects and are more aware of our natural symptoms causing us to mistakenly attribute them to the medication. The video will be delivered on a computer before participants take a placebo tablet, during a 45-minute study session at the University of Auckland. The video will be delivered once and individually to each participant in this group. To ensure the researcher remains blinded to participant group allocation, they will not be in the room when participants watch the video.