RYZOLT™ (tramadol hydrochloride extended-release tablets) is a centrally acting analgesic composed of a dual-matrix delivery system with both immediate-release and extended-release characteristics. The chemical name for tramadol hydrochloride is (±)cis-2-[(dimethylamino) methyl]-1-(3-methoxyphenyl) cyclohexanol hydrochloride. Its structural formula is:

C₁₆H₂₅NO₂·HCl

The molecular weight of tramadol hydrochloride is 299.8. Tramadol hydrochloride is a white crystalline powder that is freely soluble in water and ethanol. RYZOLT™ (tramadol hydrochloride extended-release tablets) extended-release tablets are for oral administration and contain 100 mg, 200 mg or 300 mg of tramadol hydrochloride. The tablets are white to off-white in color. The inactive ingredients in the tablet are colloidal silicon dioxide, pregelatinized modified starch, hydrogenated vegetable oil, magnesium stearate, polyvinyl acetate, povidone, sodium lauryl sulfate and xanthan gum.

Last reviewed on RxList: 3/2/2009
This monograph has been modified to include the generic and brand name in many instances.