Background: Herpes Simplex Virus 1 (HSV-1) resistance to drugs and the side effects of drugs have drawn the attention of investigators to herbal plants.
Objectives: The main aim of the current research was to investigate the effects of Glycyrrhiza glabra (liquorice root) on HSV-1. One of the objectives of the current research was to determine the efficacy and the effect of the elapsed incubation time of treating the Vero cells infected with HSV-1 by G.