SPL Set ID: 700d2c21-b5be-4d24-98a5-dc456ef42857
1 drug(s) with this SPL Set ID
Venlafaxine Hydrochloride Extended-Release Tablets are extended-release tablets for oral administration that contain venlafaxine hydrochloride, a structurally novel antidepressant. Venlafaxine hydrochloride is a selective serotonin and norepinephrine reuptake inhibitor (SNRI). It is designated (R/S)-1-[2-(dimethylamino)-1-(4‑methoxyphenyl)ethyl] cyclohexanol hydrochloride or (±)-1-[α- [(dimethylamino) methyl]-p-methoxybenzyl] cyclohexanol hydrochloride and has the empirical formula of C 17 H 27 NO 2 HCl. Its molecular weight is 313.87. The structural formula is shown below. Venlafaxine hydrochloride is a white to off-white crystalline solid with a solubility of 572 mg/mL in water (adjusted to ionic strength of 0.2 M with sodium chloride). Its octanol:water (0.2 M sodium chloride) partition coefficient is 0.43. Venlafaxine Hydrochloride Extended-Release Tablets are formulated as extended-release tablet for once-a-day oral administration. Venlafaxine Hydrochloride Extended-Release Tablets use matrix core and extended-release coating to deliver venlafaxine hydrochloride at a controlled rate over approximately 24 hours. The unitary tablet core is composed of the drug and excipients (including the matrix forming components). In an aqueous environment, such as the gastrointestinal tract, water permeates slowly through the coating into the tablet core, causing the hydrophilic matrix polymer to expand and to form a gel layer on the surface of the tablet. This gel acts as a barrier to the drug release, the drug is dissolved and is released by slow diffusion and erosion of the gel. The extended-release coating layer controls the rate at which water permeates into the tablet core, which in turn controls also the rate of drug delivery. The controlled rate of drug delivery into the gastrointestinal lumen is thus independent of pH or gastrointestinal motility. Tablets contain venlafaxine hydrochloride equivalent to 150 mg or 225 mg venlafaxine. Inactive ingredients consist of dibasic calcium phosphate dihydrate, hypromellose, methacrylic acid copolymer, colloidal silicon dioxide, magnesium stearate, polyvinyl acetate dispersion, talc, polyethylene glycol, polyvinyl alcohol, povidone, triethyl citrate, macrogol stearyl ether, sodium lauryl sulfate, carnauba wax, titanium dioxide, propylene glycol and FD&C blue #1.