Here's the report from a large Australian meta-analysis
http://consultations.nhmrc.gov.au/files/consultations/drafts/nhmrcdrafthomeopathyinformationpaper140408.pdf
Here's the upshot:
NHMRC concludes that the assessment of the evidence from research in humans does not
show that homeopathy is effective for treating the range of health conditions considered.
There were no health conditions for which there was reliable evidence that homeopathy was
effective. No good-quality, well-designed studies with enough participants for a meaningful
result reported either that homeopathy caused greater health improvements than a substance
with no effect on the health condition (placebo), or that homeopathy caused health
improvements equal to those of another treatment.
For some health conditions, homeopathy was found to be not more effective than placebo.
For other health conditions, some studies reported that homeopathy was more effective
than placebo, or as effective as another treatment, but those studies were not reliable.
For the remaining health conditions it was not possible to make any conclusion about
whether homeopathy was effective or not, because there was not enough evidence.
To be confident that the health benefits of homeopathy that were reported in some studies
were not just due to chance or the placebo effect, they would need to be confirmed by other
large, well-designed studies.
Evidence included in the overview
The overview considered 57 systematic reviews that assessed the effectiveness of
homeopathy for treating health conditions.
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