25
Participants
Start Date
February 17, 2022
Primary Completion Date
February 21, 2024
Study Completion Date
May 15, 2024
Open-label placebo
Prior to the open-label placebo administration, an explanation why placebos without concealment might be effective is offered. Participants receive placebo pills with the instruction to take 2 pills daily for 2 weeks.
No-treatment
During the no-treatment phase, participants receive no treatment for 2 weeks.
University Medical Center Hamburg-Eppendorf, Hamburg
Philipps University Marburg Medical Center, Marburg
Philipps University Marburg
OTHER
Helmut Schmidt University
OTHER
University Hospital, Essen
OTHER
Universitätsklinikum Hamburg-Eppendorf
OTHER