» Ferrous Fumarate and Docusate Sodium Extended-Release Tablets contain not less than 90.0 percent and not more than 110.0 percent of the labeled amount of ferrous fumarate (C₄H₂FeO₄) and not less than 90.0 percent and not more than 115.0 percent of the labeled amount of docusate sodium (C₂₀H₃₇NaO₇S).