Cymbalta Oral belongs to the class of Selective Serotonin and Norepinephrine Reuptake Inhibitor (SSNRIs). Cymbalta Oral is used for the treatment of Major Depressive Disorder, General Anxiety Disorder, Fibromyalgia, Chronic Musculoskeletal Pain, and Diabetic Peripheral Neuropathic Pain. The side effects of Cymbalta Oral include - Loss of appetite - Fatigue - Nausea and vomiting - Insomnia - Erectile dysfunction - Loss of libido - Dizziness - Inability to pass to urine - Drowsiness - Excessive sweating i.e. Hyperhidrosis - Orthostatic hypotension i.e. dizziness when standing quickly - Agitation - Hives - Palpitation - Tremors - Muscle twitching Cymbalta interacts with the following drugs. - Monoamine Oxidase Inhibitors (MAOIs) e.g. Phenelzine - Selective Serotonin Reuptake Inhibitors (SSRIs) e.g. Citalopram, Sertraline, Fluvoxamine - Tricyclic Antidepressants e.g. Amitriptyline, Nortriptyline