Antibiotic drug not always the culprit: allergy to a homeopathic product.

Homeopathy is one of the most used alternative remedies based on extremely diluted preparations, which can sometimes lead to serious adverse effects. In the majority of these cases, it can possibly trigger allergic reactions or toxic effects (1). A 77-year-old woman came to our observation 3 months after the onset of extensive urticaria. For a flu-like syndrome, she took azithromycin 400 mg about 24 hours before the event, and an homeopathic product for flu-like symptoms, (Omeogriphi Guna containing Aconitum napellus 5CH, Belladonna 5 CH, Echinacea Angustifolia 3CH, Vincetoxicum 5CH, Anas barbariae hepatis and cordis extractum 200K, Influenzinum 9CH) about 1 hour before the event.