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A new, comprehensive review: HOMEOPATHY = PLACEBO THERAPY
The primary objective of this paper was to assess the efficacy of homeopathy by systematically reviewing existing systematic reviews and meta-analyses and to systematically review trials on open-label placebo (OLP) treatments. A secondary objective was to understand whether homoeopathy as a whole may be considered as a placebo treatment. Electronic databases and previously published papers were systematically searched for systematic reviews and meta-analyses on homoeopathy efficacy. In total, 61 systematic reviews of homeopathy were included. The same databases plus the Journal of Interdisciplinary Placebo Studies (JIPS) were also systematically searched for randomised controlled trials (RCTs) on OLP treatments, and 10 studies were included. Qualitative syntheses showed that homoeopathy efficacy can be considered comparable to placebo. Twenty‐five reviews demonstrated that homoeopathy efficacy is comparable to placebo, 20 reviews did not come to a definite conclusion, and 16 reviews