Oclassification of ferrous sulfaten December 14, 2023, the U.S. Food and Drug Administration (FDA) issued Document 2023-27506, confirming that tferrous sulfate kidneyhe effective date for the direct final rferrous sulfate in spanishule revoking the use of partiall10 mg ferrous fumaratey hydrogenated oils (PHOs) in food is Decemferrous gluconate and folic acid tabletsber 22, 2023, as no significant adverse comments were received during the comment period.