Your mind can influence the effectiveness of the medicines you take

The effectiveness of a drug is not only reliant on its chemical components, but also to a certain extent, the patient’s expectations of its efficacy. — dpa

Not only is the medicine that patients take important for healing, but also whether or not they think the prescribed pills, ointments, syrups or procedures will work.

This is evidenced by two phenomena: the placebo effect and the nocebo effect.