This invention relates to a composition, the use of a composition for treatment, and a method of treatment of infection with Respiratory syncytial virus (RSV). The composition for treatment is a liposomally formulated reduced glutathione in a therapeutically effective amount to decrease the growth of respiratory syncytial virus. An oral preparation of liposomal reduced glutathione and a powdered form that can be reconstituted with sterile water or saline for intravenous administration are described.
