I have fibromyalgia and Cymbalta is approved to treat this condition, but I'm avoiding taking it. There have been class-action lawsuits against Eli Lilly regarding Cymbalta, claiming the company overstated the benefits of the drug and downplayed or failed to warn patients about "the frequency, severity, and/or duration of Cymbalta withdrawal”. The company "Benefitted from patients who started taking Cymbalta again (becoming physically dependent on the drug) to avoid terrible side effects."
There is a Facebook support group page called "Cymbalta Hurts Worse" that offers advice to people trying to get off the drug. It can take years to safely do so.