Copyright © 2005 Elsevier Ltd All rights reserved.
ORIGINAL PAPER
Harm in homeopathy: Aggravations, adverse drug events or medication errors?
Received 3 December 2004;
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Abstract
Background
The assessment of harm arising from the use of homeopathic medicine is much discussed, but there is little published data on the subject.
Aim
To study prospectively adverse drug events related to homeopathic medicines.
Setting
The data were gathered between 1 June 2003 and 30 June 2004 during follow-up visits consecutively carried out at the Homeopathic Clinic, Campo di Marte Hospital, Azienda USL 2, Lucca (Italy). They refer to effects following the administration of a homeopathic medicine, prescribed according to the classical homeopathic method.
Methods
Reports collected by a homeopathic doctor (not the prescribing doctor) on the nature and intensity of the effect, dose and frequency of administration, time relationship between the drug use and the adverse events, challenge, unchallange possible concomitant factors, causality (improbable, unlikely, possible, probable, certain).
Results
Out of 335 homeopathic consecutive follow-up visits between 1 June 2003 and 30 June 2004, nine adverse reactions were reported (2.68%) including one case of allergy to lactose, excipient of the granules.
Conclusions
Adverse events to homeopathic drugs exist and are distinguishable from homeopathic aggravations, but are rare and not severe.
Keywords: homeopathy; adverse events; adverse effects; aggravations







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