the second paragraph of Wiki
"Claims to the efficacy of homeopathic treatment beyond the placebo effect are unsupported by the collective weight of scientific and clinical evidence.[4][5][6][7] Common homeopathic preparations are often indistinguishable from the pure diluent because the purported medicinal compound is diluted beyond the point where there is any likelihood that molecules from the original solution are present in the final product;[8] the claim that these treatments still have any pharmacological effect is thus scientifically implausible[9][10] and violates fundamental principles of science,[11] including the law of mass action.[11] Critics also object that the number of high-quality studies that support homeopathy is small, the conclusions are not definitive, and duplication of the results, a key test of scientific validity, has proven problematic at best.[12] The lack of convincing scientific evidence supporting its efficacy[13] and its use of remedies without active ingredients have caused homeopathy to be regarded as pseudoscience[14] or quackery.[15]"
"Claims to the efficacy of homeopathic treatment beyond the placebo effect are unsupported by the collective weight of scientific and clinical evidence.[4][5][6][7] Common homeopathic preparations are often indistinguishable from the pure diluent because the purported medicinal compound is diluted beyond the point where there is any likelihood that molecules from the original solution are present in the final product;[8] the claim that these treatments still have any pharmacological effect is thus scientifically implausible[9][10] and violates fundamental principles of science,[11] including the law of mass action.[11] Critics also object that the number of high-quality studies that support homeopathy is small, the conclusions are not definitive, and duplication of the results, a key test of scientific validity, has proven problematic at best.[12] The lack of convincing scientific evidence supporting its efficacy[13] and its use of remedies without active ingredients have caused homeopathy to be regarded as pseudoscience[14] or quackery.[15]"