Prevduo (Neostigmine Methylsulfate and Glycopyrrolate) Injection, Prefilled Syringe 3 mL x 5 Pack (RX)Prevduo is a prescription medication used in the treatment of certain types of muscle weakness, including myasthenia gravis and muscle paralysis caused by skeletal muscle relaxants used during surgery. It contains two active ingredients: neostigmine methylsulfate and glycopyrrolate. Neostigmine works by preventing the breakdown of a chemical in the body called acetylcholine, which is important for muscle contraction. Glycopyrrolate works by blocking