» Oxytetracycline Calcium Oral Suspension contains the equivalent of not less than 90.0 percent and not more than 120.0 percent of the labeled amount of oxytetracycline (C₂₂H₂₄N₂O₉). It contains one or more suitable buffers, colors, flavors, preservatives, stabilizers, and suspending agents. In addition, it may contain N-acetylglucosamine.