Country: United States
Language: English
Source: NLM (National Library of Medicine)
SULFASALAZINE (UNII: 3XC8GUZ6CB) (SULFASALAZINE - UNII:3XC8GUZ6CB)
Actavis Pharma, Inc.
SULFASALAZINE
SULFASALAZINE 500 mg
ORAL
PRESCRIPTION DRUG
Sulfasalazine tablets are indicated: a) in the treatment of mild to moderate ulcerative colitis, and as adjunctive therapy in severe ulcerative colitis; and b) for the prolongation of the remission period between acute attacks of ulcerative colitis. Sulfasalazine tablets are contraindicated in: Patients with intestinal or urinary obstruction, Patients with porphyria as sulfonamides have been reported to precipitate an acute attack, Patients hypersensitive to sulfasalazine, its metabolites, sulfonamides, or salicylates. None reported.
Sulfasalazine tablets USP, 500 mg are round, mustard-colored, biconvex, debossed “WATSON ” and “796 ” on one side and partial bisect on the other side. They are available in the following package sizes: Bottles of 100 NDC 0591-0796-01 Bottles of 500 NDC 0591-0796-05 Bottles of 1000 NDC 0591-0796-10 Store at 20° to 25°C (68° to 77°F) [See USP Controlled Room Temperature].
Abbreviated New Drug Application
SULFASALAZINE- SULFASALAZINE TABLET ACTAVIS PHARMA, INC. ---------- SULFASALAZINE TABLETS, USP RX ONLY DESCRIPTION Sulfasalazine tablets USP, 500 mg for oral administration. THERAPEUTIC CLASSIFICATION: Anti-inflammatory agent. CHEMICAL DESIGNATION: 5-([_p_-(2-pyridylsulfamoyl)phenyl]azo) salicylic acid. CHEMICAL STRUCTURE: C H N O S The molecular weight of sulfasalazine is 398.39. INACTIVE INGREDIENTS: magnesium stearate, pregelatinized corn starch, sodium starch glycolate and stearic acid. CLINICAL PHARMACOLOGY PHARMACODYNAMICS The mode of action of sulfasalazine (SSZ) or its metabolites, 5-aminosalicylic acid (5- ASA) and sulfapyridine (SP), may be related to the anti-inflammatory and/or immunomodulatory properties that have been observed in animal and _in vitro _models, to its affinity for connective tissue, and/or to the relatively high concentration it reaches in serous fluids, the liver and intestinal walls, as demonstrated in autoradiographic studies in animals. In ulcerative colitis, clinical studies utilizing rectal administration of SSZ, SP, and 5-ASA have indicated that the major therapeutic action may reside in the 5-ASA moiety. PHARMACOKINETICS _In vivo _studies have indicated that the absolute bioavailability of orally administered SSZ is less than 15% for parent drug. In the intestine, SSZ is metabolized by intestinal 18 14 4 5 bacteria to SP and 5-ASA. Of the two species, SP is relatively well absorbed from the intestine and highly metabolized, while 5-ASA is much less well absorbed. Absorption: Following oral administration of 1 g of SSZ to 9 healthy males, less than 15% of a dose of SSZ is absorbed as parent drug. Detectable serum concentrations of SSZ have been found in healthy subjects within 90 minutes after the ingestion. Maximum concentrations of SSZ occur between 3 and 12 hours post-ingestion, with the mean peak concentration (6 mcg/mL) occurring at 6 hours. In comparison, peak plasma levels of both SP and 5-ASA occur approximately 10 hours after dosing. This longer time to peak is indicat Read the complete document