SPL Set ID: 2db1a899-f115-4da5-89fe-6e5b41086f6c

Bisoprolol fumarate and hydrochlorothiazide tablets, USP are indicated for the treatment of hypertension. It combines two antihypertensive agents in a once-daily dosage: a synthetic beta 1 -selective (cardioselective) adrenoceptor blocking agent (bisoprolol fumarate USP) and a benzothiadiazine diuretic (hydrochlorothiazide USP). Bisoprolol fumarate USP is chemically described as (±)-1-[4-[[2-(1-methylethoxy)ethoxy]methyl]phenoxy]-3-[(1-methylethyl)amino]-2-propanol( E )-2- butenedioate (2:1) (salt). It possesses an asymmetric carbon atom in its structure and is provided as a racemic mixture. The S(-) enantiomer is responsible for most of the beta-blocking activity. Its molecular formula is (C 18 H 31 NO 4 ) 2 •C 4 H 4 O 4 and it has a molecular weight of 766.97. Its structural formula is: Bisoprolol fumarate USP is a white crystalline powder, approximately equally hydrophilic and lipophilic, and very soluble in water and in methanol. Hydrochlorothiazide USP is 6-Chloro-3,4-dihydro-2 H -1,2,4-benzothiadiazine-7-sulfonamide 1,1-dioxide. It is a white or practically white, practically odorless, crystalline powder. It is slightly soluble in water, freely soluble in sodium hydroxide solution, in n-butylamine and in dimethylformamide, sparingly soluble in methanol, insoluble in ether, in chloroform, and in dilute mineral acids. Its molecular formula is C 7 H 8 ClN 3 O 4 S 2 and it has a molecular weight of 297.73. Its structural formula is: Each bisoprolol fumarate and hydrochlorothiazide tablet USP-2.5 mg/6.25 mg for oral administration contains: Bisoprolol fumarate USP…………………………………………..2.5 mg Hydrochlorothiazide USP………………………………………….6.25 mg Each bisoprolol fumarate and hydrochlorothiazide tablet USP-5 mg/6.25 mg for oral administration contains: Bisoprolol fumarate USP……………………………………………5 mg Hydrochlorothiazide USP…………………………………………...6.25 mg Each bisoprolol fumarate and hydrochlorothiazide tablet USP-10 mg/6.25 mg for oral administration contains: Bisoprolol fumarate USP…………………………………………...10 mg Hydrochlorothiazide USP…………………………………………..6.25 mg Inactive ingredients include colloidal silicon dioxide, crospovidone, dibasic calcium phosphate anhydrous, hypromellose, magnesium stearate, microcrystalline cellulose, polyethylene glycol, polysorbate 80 and titanium dioxide. Additionally 2.5 mg/6.25 mg and 5 mg/6.25 mg tablets contains iron oxide red and iron oxide yellow. FDA approved dissolution test specifications differ from USP. str str