Țară: Statele Unite ale Americii
Limbă: engleză
Sursă: NLM (National Library of Medicine)
ALLOPURINOL (UNII: 63CZ7GJN5I) (ALLOPURINOL - UNII:63CZ7GJN5I)
Physicians Total Care, Inc.
ALLOPURINOL
ALLOPURINOL 100 mg
ORAL
PRESCRIPTION DRUG
THIS IS NOT AN INNOCUOUS DRUG. IT IS NOT RECOMMENDED FOR THE TREATMENT OF ASYMPTOMATIC HYPERURICEMIA. Allopurinol reduces serum and urinary uric acid concentrations. Its use should be individualized for each patient and requires an understanding of its mode of action and pharmacokinetics (see CLINICAL PHARMACOLOGY, CONTRAINDICATIONS, WARNINGS and PRECAUTIONS). Allopurinol is indicated in: - the management of patients with signs and symptoms of primary or secondary gout (acute attacks, tophi, joint destruction, uric acid lithiasis, and/or nephropathy). the management of patients with signs and symptoms of primary or secondary gout (acute attacks, tophi, joint destruction, uric acid lithiasis, and/or nephropathy). - the management of patients with leukemia, lymphoma and malignancies who are receiving cancer therapy which causes elevations of serum and urinary uric acid levels. Allopurinol treatment should be discontinued when the potential for overproduction of uric acid is no longer present. the
Allopurinol Tablets USP, 100 mg are scored, round, white tablets imprinted DAN DAN and 5543 supplied in: bottles of 30 NDC 54868-0075-0 bottles of 60 NDC 54868-0075-3 bottles of 90 NDC 54868-0075-5 bottles of 100 NDC 54868-0075-4. Allopurinol Tablets USP, 300 mg are scored, round, orange tablets imprinted DAN DAN and 5544 supplied in: bottles of 30 NDC 54868-0076-6 bottles of 60 NDC 54868-0076-2 bottles of 90 NDC 54868-0076-7 bottles of 100 NDC 54868-0076-3 bottles of 180 NDC 54868-0076-8. Dispense in a tight, light-resistant container with child-resistant closure. Store at 20°-25°C (68°-77°F). [See USP controlled room temperature.] Protect from light. Watson Laboratories, Inc. Corona, CA 92880 USA Revised: January 2006 Repackaging and Relabeling by: Physicians Total Care, Inc. Tulsa, OK 74146
New Drug Application
ALLOPURINOL - ALLOPURINOL TABLET PHYSICIANS TOTAL CARE, INC. ---------- DESCRIPTION Allopurinol is known chemically as 1,5-Dihydro-4_H_-pyrazolo[3,4-_d _]pyrimidin-4-one. It is a xanthine oxidase inhibitor which is administered orally. Its solubility in water at 37°C is 80 mg/dL and is greater in an alkaline solution. The structural formula is represented below: C H N O M.W. 136.11 Allopurinol Tablets USP, 100 mg and 300 mg contain the following inactive ingredients: croscarmellose sodium, lactose monohydrate, magnesium stearate, microcrystalline cellulose, pregelatinized starch and sodium lauryl sulfate. Allopurinol Tablets USP, 300 mg also contain FD&C Yellow No. 6. CLINICAL PHARMACOLOGY Allopurinol acts on purine catabolism, without disrupting the biosynthesis of purines. It reduces the production of uric acid by inhibiting the biochemical reactions immediately preceding its formation. Allopurinol is a structural analogue of the natural purine base, hypoxanthine. It is an inhibitor of xanthine oxidase, the enzyme responsible for the conversion of hypoxanthine to xanthine and of xanthine to uric acid, the end product of purine metabolism in man. Allopurinol is metabolized to the corresponding xanthine analogue, oxipurinol (alloxanthine), which also is an inhibitor of xanthine oxidase. 5 4 4 It has been shown that reutilization of both hypoxanthine and xanthine for nucleotide and nucleic acid synthesis is markedly enhanced when their oxidations are inhibited by allopurinol and oxipurinol. This reutilization does not disrupt normal nucleic acid anabolism, however, because feedback inhibition is an integral part of purine biosynthesis. As a result of xanthine oxidase inhibition, the serum concentration of hypoxanthine plus xanthine in patients receiving allopurinol for treatment of hyperuricemia is usually in the range of 0.3 to 0.4 mg/dL compared to a normal level of approximately 0.15 mg/dL. A maximum of 0.9 mg/dL of these oxypurines has been reported when the serum urate was lowered to less than 2 mg/dL by hig Citiți documentul complet