canagliflozin and metformin hydrochloride - Generic Medications

INVOKAMET ® (canagliflozin and metformin HCl immediate-release tablets) and INVOKAMET ® XR (canagliflozin and metformin HCl extended-release tablets) contain canagliflozin and metformin HCl. Canagliflozin Canagliflozin is an inhibitor of SGLT2, the transporter responsible for reabsorbing the majority of glucose filtered by the kidney. Canagliflozin is chemically known as (1 S )-1,5-anhydro-1-[3-[[5-(4-fluorophenyl)-2-thienyl]methyl]-4-methylphenyl]-D-glucitol hemihydrate and its molecular formula and weight are C 24 H 25 FO 5 S•1/2 H 2 O and 453.53, respectively. The structural formula for canagliflozin is: Canagliflozin is practically insoluble in aqueous media from pH 1.1 to 12.9. Chemical Structure Metformin HCl Metformin HCl is a biguanide chemically known as 1,1-Dimethylbiguanide HCl and its molecular formula and weight are C 4 H 11 N 5 ● HCl and 165.62, respectively. The structural formula for metformin HCl is: Chemical Structure INVOKAMET and INVOKAMET XR INVOKAMET or INVOKAMET XR are supplied as film-coated tablets for oral administration. Each 50 mg/500 mg tablet and 50 mg/1,000 mg tablet contains 51 mg of canagliflozin equivalent to 50 mg canagliflozin (anhydrous) and 500 mg or 1,000 mg metformin HCl (equivalent to metformin 389.93 mg and 779.86 mg, respectively). Each 150 mg/500 mg tablet and 150 mg/1,000 mg tablet contains 153 mg of canagliflozin equivalent to 150 mg canagliflozin (anhydrous) and 500 mg or 1,000 mg metformin HCl (equivalent to metformin 389.93 mg and 779.86 mg, respectively). INVOKAMET contains the following inactive ingredients: croscarmellose sodium (E468), hypromellose, magnesium stearate (E572), and microcrystalline cellulose (E460[i]). The magnesium stearate is vegetable-sourced. The tablets are finished with a commercially available film-coating consisting of the following inactive ingredients: macrogol/PEG3350 (E1521), polyvinyl alcohol (E1203) (partially hydrolyzed), talc (E553b), titanium dioxide (E171), iron oxide yellow (E172) (50 mg/1,000 mg and 150 mg/500 mg tablets only), iron oxide red (E172) (50 mg/1,000 mg, 150 mg/500 mg and 150 mg/1,000 mg tablets only), and iron oxide black (E172) (150 mg/1,000 mg tablets only). INVOKAMET XR contains the following inactive ingredients: croscarmellose sodium (E468), hydroxypropyl cellulose (E463), hypromellose, lactose anhydrous, magnesium stearate (E572) (vegetable-sourced), microcrystalline cellulose (E460[i]), polyethylene oxide, and silicified microcrystalline cellulose (50 mg/500 mg and 50 mg/1,000 mg tablets only). The tablets are finished with a commercially available film-coating consisting of the following inactive ingredients: macrogol/PEG3350 (E1521), polyvinyl alcohol (E1203) (partially hydrolyzed), talc (E553b), titanium dioxide (E171), iron oxide red (E172), iron oxide yellow (E172), and iron oxide black (E172) (50 mg/1,000 mg and 150 mg/1,000 mg tablets only). INVOKAMET XR tablets provide canagliflozin for immediate-release and metformin HCl for extended-release. Each bilayer tablet is compressed from two separate granulates, one for each active ingredient of the tablet, and finished with a film-coating. The metformin HCl extended-release layer is based on a polymer matrix which controls the drug release by passive diffusion through the swollen matrix in combination with tablet erosion.