Introduction; Methodology - clinical trials, beyond clinical trials; Homeopathic provings - provings in homoeopathy, systematic review of provings; Clinical aspects: efficacy and safety - meta-analysis of RCTs, placebo effects, is homoeopathy a placebo response?, safety of homoeopathy, case of homoeopathy going wrong; Experimental studies - hypotheses of modes of action of homoeopathy, experiments in physics, in-vitro and animal models; Socio-economic aspects - health beliefs and behaviours of patients, economic evaluation of homoeopathy, constraints analysis of homoeopathy.