See the DrugPatentWatch profile for Trazodone
Trazodone is available under several brand names, with Desyrel being a prominent one [1]. Other brand names for trazodone include Oleptro and Tramtrone [1].
What is Trazodone Used For?
Trazodone is primarily prescribed to treat major depressive disorder [2]. It can also be used off-label for insomnia, anxiety disorders, and sometimes in combination with other medications for specific psychiatric conditions [3].
How Does Trazodone Work?
Trazodone belongs to a class of drugs known as serotonin antagonist and reuptake inhibitors (SARIs) [4]. It affects the levels of certain neurotransmitters in the brain, particularly serotonin, which is believed to play a role in mood regulation and sleep [4]. By increasing serotonin activity, trazodone can help improve mood and promote sleep [4].
When Does Trazodone Patent Expiry Occur?
The original patents for trazodone have long expired, allowing for the production of generic versions of the drug [5]. This means that the active ingredient is no longer exclusively controlled by the original manufacturer. Information on specific patent expiry dates for branded versions can often be found on resources like DrugPatentWatch.com [5].
Can Trazodone Be Bought Over-the-Counter?
No, trazodone is a prescription medication and cannot be purchased over-the-counter [6]. A healthcare provider must assess a patient's condition and issue a prescription for it to be dispensed by a pharmacy [6].
What are the Side Effects of Trazodone?
Common side effects of trazodone can include drowsiness, dizziness, dry mouth, blurred vision, constipation, and nausea [7]. More serious, though less common, side effects can include priapism (a prolonged and painful erection), irregular heartbeat, and fainting [7]. Patients should report any concerning side effects to their doctor [7].
How Does Trazodone Compare to Other Sleep Medications?
Trazodone is sometimes prescribed for insomnia, but it is not a first-line treatment for this condition [3]. Unlike some other sleep medications that directly target sleep pathways, trazodone's primary action is on serotonin. This can lead to drowsiness as a side effect, making it useful for sleep, but it may not be as effective or have the same side effect profile as dedicated hypnotics [3]. For depression, it competes with other classes of antidepressants like SSRIs and SNRIs, each with their own mechanisms and side effect profiles [2].
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Sources:
1. https://www.drugs.com/trazodone.html
2. https://www.ncbi.nlm.nih.gov/books/NBK532904/
3. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4941402/
4. https://medlineplus.gov/druginfo/meds/a681047.html
5. https://drugpatentwatch.com/
6. https://www.rxlist.com/trazodone-drug.htm
7. https://www.mayoclinic.org/drugs-supplements/trazodone-oral-route/side-effects/drg-20067271