SPL Set ID: 3f7da2a3-ca46-d3e8-e063-6294a90abef3
1 drug(s) with this SPL Set ID
Oxybutynin chloride, USP is an antispasmodic, muscarinic antagonist. Each oxybutynin chloride extended-release tablet, USP contains 5 mg, 10 mg, or 15 mg of oxybutynin chloride USP, formulated as a once-a-day controlled-release tablet for oral administration. Oxybutynin chloride, USP is administered as a racemate of R- and S-enantiomers. Chemically, oxybutynin chloride, USP is 4(diethylamino-but-2-ynyl (RS) 2-cyclohexyl-2-hydroxy 2 phenyl acetate hydrochloride. The molecular formula of oxybutynin chloride, USP is C 22 H 31 NO 3 •HCl. Its structural formula is: Oxybutynin chloride, USP is a white crystalline powder with a molecular weight of 393.95. It is freely soluble in water and in alcohol, very soluble in methanol and in chloroform, soluble in acetone, slightly soluble in ether, very slightly soluble in hexane. Oxybutynin chloride extended-release tablets, USP also contains the following inert ingredients: anhydrous dibasic calcium phosphate, povidone, hypromellose, colloidal silicon dioxide, magnesium stearate, polyethylene glycol, methacrylic acid copolymer type c, talc, titanium dioxide, triethyl citrate, sodium bicarbonate, sodium lauryl sulfate, ferrosoferric oxide, ferric oxide red (in 10 mg only) and iron oxide yellow (in 5 mg and 15 mg only). The imprinting material contains: shellac glaze, black iron oxide, propylene glycol and ammonium hydroxide. Meets USP Dissolution Test 9. System Components and Performance Oxybutynin chloride extended-release tablets, USP are formulated to deliver oxybutynin chloride at a controlled rate over approximately 24 hours. The dosage form is comprised of a hydrophilic cellulose polymer matrix tablet surrounded by an enteric coating system. The enteric coat is insoluble in the low pH environment of the stomach. As the tablet passes through the stomach and enters the higher pH environment of the small intestine, the enteric coating dissolves and/or erodes to expose the polymer matrix tablet which swells and releases drug at a controlled rate via diffusion and/or erosion.