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Homeopathy, the use of infinitesimal doses of substances to influence bodily functions, is an increasingly used complementary modality (Jonas,2000). Over the last ten years, higher quality scientific research has begun on its clinical effectiveness. Still there remain difficulties in the scientific study of homeopathy, such as the individualized nature of treatment (not everyone is prescribed the same remedy for the same symptoms), the use of combination remedies in which the medication contains several homeopathic remedies, small sample sizes and the lack of objective validated outcome measures (Merrell, 2002).
Two major meta-analyses of the clinical effects of homeopathy have been done, with both finding results that indicate positive effects of homeopathy over placebo (Kleinjnen, 1991; Linde, 1997). However, the authors found insufficient evidence from these studies that homeopathy is clearly effective for any single clinical condition and called for further rigorous research. No studies have shown effectiveness specifically for pain: studies of the most popular homeopathic remedy for tissue inflammation, arnica, have failed to show its effectiveness over placebo.
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