» Epinephrine Bitartrate Ophthalmic Solution is a sterile, buffered, aqueous solution of Epinephrine Bitartrate. It contains an amount of epinephrine bitartrate equivalent to not less than 90.0 percent and not more than 115.0 percent of the labeled amount of epinephrine (C₉H₁₃NO₃). It contains a suitable antibacterial agent and may contain suitable preservatives.