henry copeland:

Lessons learned from placebo groups in antidepressant trials

The analysis of ‘nocebo effects’, e.g. adverse effects in placebo groups of antidepressant trials also confirms the impact of expectations: nocebo symptoms reflected the typical side-effect patterns expected in the drug group, with higher symptoms rates in the placebo groups of tricyclic antidepressant trials compared with placebo groups of trials testing selective serotonin reuptake inhibitors.
- www.ncbi.nlm.nih.gov