deferiprone

Deferiprone Tablets are available in two formulations. A 1,000 mg formulation and a 500 mg formulation, which have different dosing regimens to achieve the same total daily dosage. ( 2.1 ) To prevent medication errors, before prescribing and dispensing, ensure that the tablet formulation is appropriate for the dosing regimen. Each tablet has distinct identifying characteristics. ( 2.1 , 3 ) Deferiprone Tablets (three times a day), 1,000 mg: Starting oral dosage: 75 mg/kg/day (actual body weight) in three divided doses ( 2.3 ) Maximum oral dosage: 99 mg/kg/day (actual body weight) in three divided doses ( 2.3 ) Deferiprone Tablets (three times a day), 500 mg: Starting oral dosage: 75 mg/kg/day (actual body weight) in three divided doses ( 2.4 ) Maximum oral dosage: 99 mg/kg/day (actual body weight) in three divided doses ( 2.4 ) 2.1 Important Dosage and Administration Information Deferiprone Tablets are available in a 1,000 mg formulation and a 500 mg formulation, which have different oral dosing regimens to achieve the same total daily dosage. Deferiprone Tablets (three times a day) - 1,000 mg - given three times a day [see Dosage and Administration ( 2.3 )] Deferiprone Tablets - 500 mg - given three times a day [see Dosage and Administration ( 2.4 )] To prevent medication errors, before prescribing and dispensing, ensure that the tablet formulation is appropriate for the…

The following clinically significant adverse reactions are described below and elsewhere in the labeling: Agranulocytosis and Neutropenia [see Warnings and Precautions ( 5.1 )] Liver Enzyme Elevations [see Warnings and Precautions ( 5.2 )] Zinc Deficiency [see Warnings and Precautions ( 5.3 )] The most common adverse reactions in patients with thalassemia (incidence ≥ 6%) are nausea, vomiting, abdominal pain, arthralgia, ALT increased and neutropenia. ( 6 ) To report SUSPECTED ADVERSE REACTIONS, contact Dr. Reddy's Laboratories, Inc. at 1-888-375-3784 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch 6.1 Clinical Trial Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. The following adverse reaction information represents the pooled data collected from single arm or active-controlled clinical trials with deferiprone tablets (three times a day). Thalassemia Syndromes The safety of deferiprone tablets was evaluated in the pooled clinical trial database [see Clinical Studies ( 14.1 )] . Patients received deferiprone tablets (three times a day). Deferiprone tablets were administered orally three times a day (total daily dose either 50, 75, or 99 mg/kg), N=642.…

Deferiprone tablets are contraindicated in patients with known hypersensitivity to deferiprone or to any of the excipients in the formulations. The following reactions have been reported in association with the administration of deferiprone: Henoch-Schönlein purpura; urticaria; and periorbital edema with skin rash [see Adverse Reactions ( 6.2 )]. Hypersensitivity to deferiprone or to any of the excipients in the formulations. ( 4 )

No cases of acute overdose have been reported. There is no specific antidote to deferiprone tablets overdose. Neurological disorders such as cerebellar symptoms, diplopia, lateral nystagmus, psychomotor slowdown, hand movements and axial hypotonia have been observed in children treated with 2.5 to 3 times the recommended dose for more than one year. The neurological disorders progressively regressed after deferiprone discontinuation.

U.S. Poison Control: call or text 1-800-222-1222 (free, 24/7). In an emergency call 911. From the FDA label; not medical advice.

Drugs Associated with Neutropenia or Agranulocytosis: Avoid co- administration. If co-administration is unavoidable, closely monitor the absolute neutrophil count. ( 7.1) UGT1A6 Inhibitors: Avoid co-administration. ( 7.2 ) Polyvalent Cations: Allow at least a 4-hour interval between administration of Deferiprone Tablets and drugs or supplements containing polyvalent cations (e.g., iron, aluminum, or zinc). ( 2 , 7.2 ) 7.1 Drugs Associated with Neutropenia or Agranulocytosis Avoid co-administration of deferiprone tablets with other drugs known to be associated with neutropenia or agranulocytosis. If co-administration is unavoidable, closely monitor the absolute neutrophil count [see Warnings and Precautions ( 5.1 )] . 7.2 Effect of Other Drugs on deferiprone tablets UDP-Glucuronosyltransferases (UGT) Avoid use of UGT1A6 inhibitors (e.g., diclofenac, probenecid, or silymarin (milk thistle)) with deferiprone tablets [see Dosage and Administration ( 2 ), Adverse Reactions ( 6.1 ), Clinical Pharmacology ( 12.3 )] . Polyvalent Cations Deferiprone has the potential to bind polyvalent cations (e.g., iron, aluminum, and zinc); allow at least a 4-hour interval between deferiprone tablets and other medications (e.g., antacids), or supplements containing these polyvalent cations [see Dosage and Administration ( 2 )] .