In addition to the side effects of Cymbalta, Medpage Today warns:
Duloxetine should not be taken by patients who are using or have recently used a monoamine oxidase inhibitor, patients taking thioridazine (Mellaril) or patients with uncontrolled glaucoma. Severe and sometimes fatal liver problems have been reported among patients taking duloxetine. Duloxetine may increase the risk of hemorrhage among patients taking NSAIDs, aspirin, or other blood thinners.Cymbalta is also approved for Major Depressive Disorder, the pain caused by Diabetic Peripheral Neuropathy and Generalized Anxiety Disorder.
Migraine and Fibromyalgia are often comorbid. Other illnesses comorbid with Migraine include but are not limited to Thyroid Disease, Temporomandibular Disorders, Depression, Anxiety, Epilepsy, Hypertension, and Stroke.