- Systematic review of four clinical trials, with cautiously negative conclusions. Includes the trial reported in Carlini EA, Braz S, Troncone LRP, et al (1987). Efeito hipnótico de medicação homeopática e do placebo. Avaliação pela técnica de “duplo-cego” e “cruzamento” [Hypnotic effect of homeopathic medication and placebo. Evaluation by “double-blind” and “crossover” techniques]. Revista da Associação Médica Brasileira; 33:83–88. PubMed Link
- Clinical trial, with non-conclusive findings, on 26 insomnia patients at homeopathic clinics in Brazil. Approximately half of the patients were randomly allocated to receive homeopathic medicine and the others received dummy medicine (placebo); they were not told which treatment group they were in. After a period of 6 weeks’ treatment, a marked sleep improvement was reported by patients of each group (homeopathic medicine and placebo medicine), but with no difference between the groups. PubMed Link
- Clinical trial, with positive findings, on 30 insomnia sufferers in South Africa, who were identified through local advertising. Approximately half of the patients were randomly allocated to receive homeopathic medicine and the others received dummy medicine (placebo); they were not told which treatment group they were in. After 4 weeks, participants who received homeopathy reported more improvement in sleep compared to those who received placebo. PubMed Link
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