Duletin 20mg Capsule is a prescription medicine used in the treatment of depression, anxiety disorder, diabetic nerve pain, fibromyalgia (a condition in which there are generalized pain and tenderness in the body), neuropathic pain and stress urinary incontinence.Duletin 20mg Capsule works by increasing the level of chemical messengers (serotonin and noradrenaline) in the brain that have a calming effect on the brain and relax the nerves, thus treating your illness. It may be taken with or without food. It is advised to take this medicine at a fixed time each day to maintain a consistent level in the blood. If you miss any doses, take it as soon as you remember. Do not skip any doses and finish the full course of treatment even if you feel better. It is important that this medication is not stopped suddenly as it may worsen your symptoms.