Ogestrel 0.5/50 Each white tablet, for oral administration contains 0.5 mg of norgestrel, 18,19-Dinorpregn-4-en-20-yn-3-one, 13-ethyl-17-hydroxy-, (17α)-(±)-, a totally synthetic progestogen, and 0.05 mg ethinyl estradiol, 19-Nor-17α-pregna-1,3,5(10)-trien-20-yne-3,17-diol, and the following inactive ingredients: croscarmellose sodium, lactose, magnesium stearate, microcrystalline cellulose, and povidone.… Continue Reading

Olanzapine and Fluoxetine

Olanzapine and fluoxetine hydrochloride capsules, USP combine an atypical antipsychotic and a selective serotonin reuptake inhibitor, olanzapine (the active ingredient in Zyprexa, and Zyprexa Zydis)and fluoxetine hydrochloride (the active ingredient in Prozac, Prozac Weekly, and Sarafem). Olanzapine belongs to the… Continue Reading

Olmesartan Medoxomil and Hydrochlorothiazide

Olmesartan medoxomil and hydrochlorothiazide tablets are a combination of an angiotensin II receptor antagonist (AT subtype), olmesartan medoxomil, and a thiazide diuretic, hydrochlorothiazide (HCTZ). Olmesartan medoxomil is 4-(1-hydroxy-1-methylethyl)-2-propyl-1-[2′-(1-tetrazole-5-yl)biphenyl-4-ylmethyl]imidazole-5-carboxylic acid 5-methyl-2-oxo-1,3-dioxol-4-ylmethyl ester. Its structural formula is: CHNO M.W. 558.59 Olmesartan medoxomil… Continue Reading

Olmesartan Medoxomil

Olmesartan medoxomil,USP  a prodrug, is hydrolyzed to olmesartan during absorption from the gastrointestinal tract. Olmesartan is a selective AT1 subtype angiotensin II receptor antagonist. Olmesartan medoxomil is described chemically as 2,3-dihydroxy-2-butenyl 4-(1 hydroxy-1-methylethyl)-2-propyl-1-[p-(o-1H-tetrazol-5-ylphenyl)benzyl]imidazole5-carboxylate, cyclic 2,3-carbonate. Its empirical formula is CHNO… Continue Reading

Omeprazole and Sodium Bicrabonate

Omeprazole and sodium bicarbonate capsules are a combination of omeprazole USP, a proton-pump inhibitor, and sodium bicarbonate USP, an antacid. Omeprazole USP is a substituted benzimidazole,5-methoxy-2-[[(4-methoxy-3,5-dimethyl-2-pyridinyl)methyl]sulfinyl]-1-benzimidazole, ­­a racemic mixture of two enantiomers that inhibits gastric acid secretion. Its empirical formula… Continue Reading


Orenitram is an extended release osmotic tablet for oral administration. Orenitram is formulated as the diolamine salt of treprostinil, a tricyclic benzindene analogue of prostacyclin. The chemical name is Acetic acid, 2-[[(1,2,3a,9a)-2,3,3a,4,9,9a-hexahydro-2-hydroxy-1-[(3)-3-hydroxyoctyl]-1-benz[f]inden-5-yl]oxy]-, complexed with 2,2′-iminobis[ethanol] (1:1). The molecular formula is… Continue Reading


Hydroquinone is 1,4-benzenediol. Hydroquinone occurs as fine, white needles. The drug is freely soluble in water and in alcohol. Chemically, hydroquinone is designated as p-dihydroxybenzene; the empirical formula is C6H6O2; molecular weight is 110.11 g per mol. The chemical structure… Continue Reading


Oseltamivir Phosphate Capsules, USP, an influenza neuraminidase inhibitor (NAI), are available as capsules containing 30 mg, 45 mg, or 75 mg oseltamivir for oral use, in the form of oseltamivir phosphate. In addition to the active ingredient, each capsule contains… Continue Reading