OVCONŽ 50, 28-Day (norethindrone and ethinyl estradiol tablets, USP) provides a continuous regimen for oral contraception derived from 21 tablets composed of norethindrone and ethinyl estradiol to be followed by 7 green tablets of inert ingredients. The chemical name for norethindrone is 17-hydroxy-19-nor-17??­pregn-4-en-20-yn-3-one and for ethinyl estradiol the chemical name is 19-nor-17?-pregna-1,3,5(10)-trien?­20-yne-3,17-diol. The structural formulas are:

OCUFLOX (ofloxacin ophthalmic solution) 0.3% is a sterile ophthalmic solution. It is a fluorinated carboxyquinolone anti-infective for topical ophthalmic use.

OPANA ER (oxymorphone hydrochloride) extended-release tablet is a semi-synthetic opioid analgesic supplied in 5 mg, 7.5 mg, 10 mg, 15 mg, 20 mg, 30 mg, and 40 mg tablet strengths for oral administration. The tablet strength describes the amount of oxymorphone hydrochloride per tablet. The tablets contain the following inactive ingredients: hypromellose, polyethylene oxide, polyethylene glycol, ?-tocopherol, citric acid, polyvinyl alcohol, titanium dioxide, macrogol and talc. In addition, the 5 mg, 7.5 mg and 30 mg tablets contain iron oxide red. The 7.5 mg tablets contain iron oxide black, and iron oxide yellow. The 10 mg tablets contain FD&C yellow No. 6. The 20 mg tablets contain FD&C blue No. 1, FD&C yellow No. 6, and D&C yellow No. 10. The 40 mg tablets contain FD&C yellow No. 6, and D&C yellow No. 10.

OMNISCAN (gadodiamide) Injection is the formulation of the gadolinium complex of diethylenetriamine pentaacetic acid bismethylamide, and is an injectable, nonionic extracellular enhancing agent for magnetic resonance imaging.

The active ingredient in DIPENTUM Capsules (olsalazine sodium) is the sodium salt of a salicylate, disodium 3,3'-azobis (6-hydroxybenzoate) a compound that is effectively bioconverted to 5-aminosalicylic acid (5-ASA), which has anti-inflammatory activity in ulcerative colitis. Its empirical formula is C14H8N2N2O6 with a molecular weight of 346.21.

Each of the following products is a combination oral contraceptive containing the progestational compound norgestimate and the estrogenic compound ethinyl estradiol.

Oral poliovirus vaccine (OPV) contains live attenuated poliovirus (Sabin strain types 1, 2 and 3) and is intended for polio prophylaxis in infants 6-12 weeks of age, all unimmunized children up to 18 years of age, and high-risk adults. Adults, however, should receive the inactivated poliovirus vaccine (IPV). The attenuated virus particles in OPV are harvested from monkey kidney cell cultures and undergo an extensive purification process. OPV is administered multiple times to ensure immunity to all three types of poliovirus. Clinical studies reveal that OPV is highly effective in preventing natural poliovirus-induced neurologic sequelae. OPV received FDA approval in1963.

XENICAL (orlistat) is a gastrointestinal lipase inhibitor for obesity management that acts by inhibiting the absorption of dietary fats.

OxandrinŽ (oxandrolone) oral tablets contain 2.5 mg or 10 mg of the anabolic steroid oxandrolone.

ORTHO EVRAŽ is a combination transdermal contraceptive patch with a contact surface area of 20 cm?. It contains 6.00 mg norelgestromin (NGMN) and 0.75 mg ethinyl estradiol (EE). Systemic exposures (as measured by area under the curve [AUC] and steady state concentration [Css]) of NGMN and EE during use of ORTHO EVRAŽ are higher and peak concentrations (Cmax) are lower than those produced by an oral contraceptive containing norgestimate 250 mcg / EE 35 mcg. (See BOLDED WARNING; CLINICAL PHARMACOLOGY, Transdermal versus Oral Contraceptives).