Definition

A type of drug that is used to treat depression and some other conditions. Serotonin-norepinephrine reuptake inhibitors stop or delay substances called serotonin and norepinephrine from being reabsorbed in the brain, which leaves more of them available for the brain to use. Raising serotonin and norepinephrine levels can help regulate mood and relieve depression and chronic pain. Serotonin-norepinephrine reuptake inhibitors include drugs such as duloxetine and venlafaxine. Also called SNRI.