Cymbalta (duloxetine) can cause a range of side effects when you stop taking it, especially if you discontinue it abruptly. This is known as a withdrawal or antidepressant discontinuation syndrome ...

Cymbalta is the brand name for duloxetine, and Effexor XR contains the active drug venlafaxine. These are prescription drugs called serotonin-norepinephrine reuptake inhibitors (SNRIs). They are ...

Due to the way Cymbalta works on your central nervous system, your body can become used to the drug. So if you suddenly stop taking it, you may start to experience uncomfortable side effects.