SPL Set ID: 3686cde5-f76d-4d16-aa5d-caceb8408f8c

Duloxetine hydrochloride is a selective serotonin and norepinephrine reuptake inhibitor (SNRI) for oral administration. Its chemical designation is (+)-(S)-N-methyl-γ-(1-naphthyloxy)-2-thiophenepropylamine hydrochloride. The empirical formula is C18H19NOS•HCl, which corresponds to a molecular weight of 333.88. The structural formula is: Duloxetine hydrochloride USP is a white to off-white powder, which is freely soluble in methanol and slightly soluble in water. Each capsule contains enteric-coated pellets of 22.4, 33.7, or 67.3 mg of duloxetine hydrochloride equivalent to 20, 30, or 60 mg of duloxetine, respectively. These enteric-coated pellets are designed to prevent degradation of the drug in the acidic environment of the stomach. Inactive Ingredients include sugar spheres (contains sugar and corn starch), hypromellose, glycine, sucrose, talc, hypromellose phthalate, triethyl citrate, gelatin, titanium dioxide, FD&C Blue 2, sodium lauryl sulfate, shellac and iron oxide yellow. The 20 mg capsules also contain black iron oxide and potassium hydroxide. The 60 mg capsules also contain potassium hydroxide. FDA approved dissolution test specifications differ from USP. duloxetine