The present invention provides a stable, aqueous injectable solution comprising epinephrine or its pharmaceutically acceptable salt, a sulfite antioxidant, butylated hydroxyl anisole, an organic acid and a chelating agent, wherein the solution is free of an inorganic acid and an inorganic base. The invention also provides a method of treating the septic shock by intravenous administration of stable aqueous injectable solution comprising epinephrine or its pharmaceutically acceptable salt, a sulfite antioxidant, butylated hydroxyl anisole, an organic acid and a chelating agent, wherein the solution is free of an inorganic acid and an inorganic base.