A person's circadian rhythm is an internal biological clock that regulates a variety of biological processes according to an approximate 24-hour period. Most of a person's body systems demonstrate circadian variations. The body systems with the most prominent circadian variations are the sleep-wake cycle, the temperature regulation system, and the endocrine system.
The malfunctioning of a person's circadian system, or biological clock, causes circadian rhythm disorders. The circadian rhythm disorder related to the sleep-wake cycle can be categorized into the following 2 main groups:
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Cymbalta is approved for the treatment of depression.
Important Safety Information
Cymbalta® (duloxetine HCl) is approved for the treatment of depression and generalized anxiety disorder, and for the management of diabetic peripheral neuropathic pain and fibromyalgia.
Patients on antidepressants and their families or caregivers should watch for new or worsening depression symptoms, unusual changes in behavior, thoughts of suicide, anxiety, agitation, panic attacks, difficulty sleeping, irritability, hostility, aggressiveness, impulsivity, restlessness, or extreme hyperactivity. Call your healthcare provider right away if you have thoughts of suicide or if any of these symptoms are severe or occur suddenly. Be especially observant within the first few months of antidepressant treatment or whenever there is a change in dose.
You should not take Cymbalta if:
Before starting Cymbalta, tell your healthcare provider:
While taking Cymbalta, tell your healthcare provider:
If you have any questions, talk to your healthcare provider before taking Cymbalta.
The most common side effect of Cymbalta was nausea. For most people who had it, the nausea was mild to moderate. Other common side effects included dry mouth, sleepiness, constipation, decreased appetite, and, increased sweating. This is not a complete list of side effects.
Primary insomnia is sleeplessness that is not attributable to a medical, psychiatric, or environmental cause.
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