ABSTRACT
Introduction: in the face of the health emergency, Cuban science undertook a series of protocols with the aim of achieving an effective treatment against COVID-19, thus giving rise to a homeopathic preparation called PrevengHo..-Vir. The trial has not yet finished and there remains a gap of doubts regarding the possible adverse reactions that the preparation could cause. Background: to characterize clinically and epidemiologically five towns' populations that consumed the homeopathic preparation and to identify the main adverse reactions reported by the patients under study. Method: an observational, descriptive, cross-sectional study was carried out in five towns in the municipality of Santa Clara, with the total of patients who used the preparation;with the sample being N=505. Results: a ratio of men and women of 1:1 is presented, with an average of 44.3 years of age, 63.7% have a high school degree (above 12th grade), only 4.8% used the preparation incorrectly, of which 3.2% had a low educational level. A total of 13 subjects presented reactions. Conclusions: Most of the adverse reactions are mild and do not require urgent medical attention. The homeopathic preparation PrevengHo..-Vir is safe and without risk to the lives of consumers.