Description General description A stable-labeled internal standard suitable for numerous GC/MS and LC/MS applications from clinical toxicology and urine drug testing to forensic analysis and isotope dilution methods. Duloxetine, marketed in the US under the trade name Cymbalta®, is a serotonin-norepinephrine reuptake inhibitor (SNRI) used to treat major depressive disorder and to alleviate pain associated with diabetic neuropathy, fibromyalgia, and osteoarthritis. Legal Information CERILLIANT is a registered trademark of Cerilliant Corporation Cymbalta is a registered trademark of Eli Lilly and Co. Snap-N-Shoot is a registered trademark of Cerilliant Corporation Snap-N-Spike is a registered trademark of Cerilliant Corporation