Purpose Homeopathy has few legal regulations acting as gatekeepers. The remedies may be in widespread use despite unclear mechanism of effect and safety assessment. Uncontrolled studies of homeopathic practise document consistently strong therapeutic effects and sustained patient satisfaction however, cases of adverse effects have also been reported. According to homeopathic theory transient worsening of patients symptoms (aggravations), are understood as a wanted reaction to the medication. To date, systematic information is lacking on how commonly adverse effects and homeopathic aggravations are reported in RCTs, observational studies and surveys.
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