CyclessaŽ (desogestrel ethinyl estradiol tablets) (desogestrel/ethinyl estradiol) Tablets are a triphasic oral contraceptive containing two active components, desogestrel and ethinyl estradiol. Each 28-day treatment cycle pack consists of three active dosing phases: 7 light yellow tablets containing 0.100 mg desogestrel (13-ethyl-11-methylene-18,19-dinor-17? -pregn-4-en-20-yn-17-ol) and 0.025 mg ethinyl estradiol (19-nor-17? -pregna-1,3,5(10)-trien-20-yne-3, 17-diol); 7 orange tablets containing 0.125 mg desogestrel and 0.025 mg ethinyl estradiol, and 7 red tablets containing 0.150 mg desogestrel and 0.025 mg ethinyl estradiol. Inactive ingredients include vitamin E, pregelatinized starch, stearic acid, lactose monohydrate, hydroxypropyl methylcellulose, polyethylene glycol, titanium dioxide, talc, yellow ferric oxide (in light yellow and orange tablets), and red ferric oxide (in orange and red tablets). CyclessaŽ (desogestrel ethinyl estradiol tablets) also contains 7 green tablets with the following inert ingredients: lactose monohydrate, corn starch, magnesium stearate, hydroxypropyl methylcellulose, polyethylene glycol, titanium dioxide, FD&C Blue No. 2 aluminum lake, yellow ferric oxide, and talc. The molecular weights for desogestrel and ethinyl estradiol are 310.48 and 296.40, respectively. The structural formulas are as follows:

Prochlorperazine Maleate is classified as an antiemetic and antipsychotic tranquilizer. Prochlorperazine is a phenothiazine derivative, present in the tablets as the maleate. Its chemical name is 2-chloro-10- [3-(4-methyl-1-piperazinyl)propyl]-10 H-phenothiazine (Z)-2-butenedioate (1:2). Empirical formulas (and molecular weight) are: prochlorperazine maleate-C20H24CIN3S•2C4H4O4 (606.10) and prochlorperazine base- C20H24CIN3S (373.95).

Acetazolamide, an inhibitor of the enzyme carbonic anhydrase is a white to faintly yellowish white crystalline, odorless powder, weakly acidic, very slightly soluble in water and slightly soluble in alcohol. The chemical name for acetazolamide is N-(5-Sulfamoyl-1,3,4-thiadiazol-2-yl)-acetamide and has the following chemical structure:

Coartem (artemether lumefantrine tablets) Tablets contain a fixed combination of two antimalarial active ingredients, artemether, an artemisinin derivative, and lumefantrine. Both components are blood schizontocides. The chemical name of artemether is (3R,5aS,6R,8aS,9R,10S,12R,12aR)-decahydro-10-methoxy-3,6,9-trimethyl-3,12-epoxy-12H-pyrano[4,3-j]-1,2-benzodioxepine. Artemether is a white, crystalline powder that is freely soluble in acetone, soluble in methanol and ethanol, and practically insoluble in water. It has the empirical formula C16H2605 with a molecular weight of 298.4, and the following structural formula:

DesogenŽ (desogestrel and ethinyl estradiol tablets) (desogestrel and ethinyl estradiol) Tablets provide an oral contraceptive regimen of 21 white round tablets each containing 0.15 mg desogestrel (13-ethyl-11-methylene-18,19-dinor-17 alpha-pregn-4-en-20-yn-17-ol) and 0.03 mg ethinyl estradiol (19-nor-17 alpha-pregna-1,3,5 (10)-trien-20-yne-3,17-diol). Inactive ingredients include vitamin E, corn starch, povidone, stearic acid, colloidal silicon dioxide, lactose, hydroxypropyl methyl-cellulose, polyethylene glycol, titanium dioxide, and talc. DesogenŽ (desogestrel and ethinyl estradiol tablets) also contains 7 green round tablets containing the following inactive ingredients: lactose, corn starch, magnesium stearate, FD&C Blue No. 2 aluminum lake, ferric oxide, hydroxypropyl methylcellulose, polyethylene glycol, titanium dioxide, and talc. The molecular weights for desogestrel and ethinyl estradiol are 310.48 and 296.41, respectively. The structural formulas are as follows:

Rivaroxaban, a factor Xa inhibitor, is the active ingredient in XARELTO Tablets with the chemical name 5-Chloro-N-({(5S)-2-oxo-3-[4-(3-oxo-4-morpholinyl)phenyl]-1,3-oxazolidin-5-yl}methyl)-2-thiophenecarboxamide. The molecular formula of rivaroxaban is C19H18ClN3O5S and the molecular weight is 435.89. The structural formula is:

TrecatorŽ (ethionamide tablets, USP) is used in the treatment of tuberculosis. The chemical name for ethionamide is 2-ethylthioisonicotinamide with the following structural formula:

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:

LIMBITROL (chlordiazepoxide amitriptyline ds tablets) combines for oral administration, chlordiazepoxide, an agent for the relief of anxiety and tension, and amitriptyline, an antidepressant. It is available in DS (double strength) white, film-coated tablets, each containing 10 mg chlordiazepoxide and 25 mg amitriptyline (as the hydrochloride salt); and in blue, film-coated tablets, each containing 5 mg chlordiazepoxide and 12.5 mg amitriptyline (as the hydrochloride salt). Each tablet also contains corn starch, hydroxypropyl cellulose, hyproxypropyl methylcellulose, lactose, magnesium stearate, polyethylene glycol, povidone and propylene glycol; LIMBITROL (chlordiazepoxide amitriptyline ds tablets) tablets contain the following colorant system-FD&C Blue No. 1, aluminum lake and titanium dioxide. LIMBITROL (chlordiazepoxide amitriptyline ds tablets) DS tablets contain titanium dioxide.

Dilantin is an antiepileptic drug.