Hydrocodone bitartrate and acetaminophen is supplied in liquid form for oral administration.

ZUTRIPRO Oral Solution contains hydrocodone bitartrate (a semisynthetic centrally-acting opioid antitussive), Chlorpheniramine maleate (an antihistamine), and pseudoephedrine hydrochloride (an indirect sympathomimetic amine).

ZYMAXID™ (gatifloxacin ophthalmic solution) sterile ophthalmic solution is an 8-methoxyfluoroquinolone anti-infective for the treatment of bacterial conjunctivitis. Its chemical name is (±)-1-Cyclopropyl-6fluoro-1,4-dihydro-8-methoxy-7-(3-methyl1-piperazinyl)-4-oxo-3-quinolinecarboxylic acid, sesquihydrate. Its molecular formula is C19H22FN3O4 • 1?H2O, and its molecular weight is 402.42. Its chemical structure is:

ZEMURON (rocuronium bromide) injection is a nondepolarizing neuromuscular blocking agent with a rapid to intermediate onset depending on dose and intermediate duration. Rocuronium bromide is chemically designated as 1-[17?-(acetyloxy)-3?-hydroxy-2?-(4-morpholinyl)-5?-androstan-16?-yl]-1-(2?­propenyl)pyrrolidinium bromide.

ADVANCED FORMULA ZENATE®
Prenatal Multivitamin/ Mineral Supplement Tablets

ZYCLARA (imiquimod) Cream, 2.5% or 3.75% is intended for topical administration. Each gram contains 25 mg or 37.5 mg of imiquimod, respectively, in a white to faintly yellow oilin-water cream base consisting of isostearic acid, cetyl alcohol, stearyl alcohol, white petrolatum, polysorbate 60, sorbitan monostearate, glycerin, xanthan gum, purified water, benzyl alcohol, methylparaben, and propylparaben.

ZOSYN (piperacillin and tazobactam for injection, USP) is an injectable antibacterial combination product consisting of the semisynthetic antibiotic piperacillin sodium and the ?lactamase inhibitor tazobactam sodium for intravenous administration.

ZELAPAR® Orally Disintegrating Tablets contain selegiline hydrochloride, a levorotatory acetylenic derivative of phenthylamine. Selegiline hydrochloride is described chemically as: (-)-(R)-N, ? dimethyl-N-2-propynylphenethylamine hydrochloride and its structural formula is:

RETROVIR is the brand name for zidovudine (formerly called azidothymidine [AZT]), a pyrimidine nucleoside analogue active against HIV. RETROVIR IV (zidovudine injection) Infusion is a sterile solution for intravenous infusion only. Each mL contains 10 mg zidovudine in Water for Injection. Hydrochloric acid and/or sodium hydroxide may have been added to adjust the pH to approximately 5.5. RETROVIR IV (zidovudine injection) Infusion contains no preservatives.

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: