In September 2008, Fer-In-Sol Iron Supplement Drops introduced a new dropper and dosing instructions. This product has a new dropper that is marked 0.5 mL and 1.0 mL to provide 7.5 or 15.0 mg elemental iron, respectively, when used with the supplied bottle. Fer-In-Sol product produced prior to September 2008 uses a dropper marked 0.3 mL and 0.6 mL to provide 7.5 or 15 mg elemental iron, respectively, when used with the supplied bottle.