A clinical audit conducted by Health Services Research sought to assess the effectiveness of homeopathic interventions administered in 2020 for 305 outpatients with COVID-19 symptoms. Homeopathy is the treatment of health conditions by minute doses of natural substances. As there is no standard homeopathic remedy, the treatments covered by the audit were individualized for each patient.

Published in Integrative Medicine Reports, the audit reported that 70 percent of the patients experienced a full recovery, while 14.4 percent showed no improvement. Most cases (74.4 percent) were resolved within 21 days and 29.2 percent were resolved in less than five days. The authors of the audit also noted that homeopathy was easy to administer and there were no adverse reactions.