Prophylactic aromatherapy for supervening infections in patients with chronic bronchitis. Statistical evaluation conducted in clinics against a placebo

A controlled clinical trial was conducted during the winter 1985–1986 with 182 patients with chronic bronchitis living in institutions to evaluate the effectiveness of ‘Gouttes aux Essences’ (Essence Drops), a well known mixture in aromatherapy to prevent supervening bronchial infections. Although the overall number of supervening infections and their characteristics were not modified by the treatment, the frequency of relapse at least appears to have been significantly lowered in the group receiving treatment compared to the group receiving placebo.