Source: FDA, National Drug Code (US) Revision Year: 2020
Zileuton is an orally active inhibitor of 5-lipoxygenase, the enzyme that catalyzes the formation of leukotrienes from arachidonic acid. Zileuton has the chemical name (±)1(1-Benzo[b]thien-2-ylethyl)-1-hydroxyurea and the following chemical structure:
Zileuton has the molecular formula C11H12N2O2S and a molecular weight of 236.29. It is a racemic mixture (50:50) of R(+) and S(-) enantiomers. Zileuton is a practically odorless, white, crystalline powder that is soluble in methanol and ethanol, slightly soluble in acetonitrile, and practically insoluble in water and hexane. The melting point ranges from 144.2˚C to 145.2˚C. ZYFLO tablets for oral administration are supplied in one dosage strength containing 600 mg of zileuton.
Inactive Ingredients: crospovidone, hydroxypropyl cellulose, hypromellose, magnesium stearate, microcrystalline cellulose, pregelatinized starch, propylene glycol, sodium starch glycolate, talc, and titanium dioxide.
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ZYFLO Tablets are available as 1 dosage strength: 600-mg white to off white, ovaloid, film coated tablets debossed “CT 1” on one side and bisect on the other side. High-density polyethylene bottles of: 120 Tablets. NDC 10122-901-12 Manufactured for: Chiesi USA, Inc., Cary, NC 27518 |
| Drug | Countries | |
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| ZYFLO | United States |
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