» Epinephrine Bitartrate for Ophthalmic Solution is a sterile, dry mixture of Epinephrine Bitartrate and suitable antioxidants, prepared by freeze-drying. It contains an amount of epinephrine bitartrate equivalent to not less than 90.0 percent and not more than 110.0 percent of the labeled amount of epinephrine (C₉H₁₃NO₃).