The patient needs to have no doubts that have received medicine and the placebo effect will work 30-50% according to the previous comment, which is really close

The patient needs to have no doubts that have received medicine and the placebo effect will work 30-50% according to the previous comment, which is really close to what I thought. If the patient doubts the effect won't take at all. So that matters but not all for the reasons OP thinks. It matters bc you can heal yourself, ppl literally do it everyday and it is measured by science as the placebo effect but if you don't think you can, you can't.