Paroxetine: Difference between revisions
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In [[medicine]], '''paroxetine''' is a [[second-generation antidepressant]] used for treating [[major depression]]. Its pharmacological action is a [[serotonin uptake inhibitor]]. | In [[medicine]], '''paroxetine''' is a [[second-generation antidepressant]] used for treating [[major depression]]. Its pharmacological action is a [[serotonin uptake inhibitor]]. | ||
In the United States, it is marketed paroxetine hydrochloride (e.g., Paxil®, Paxil CR®) and as paroxetine mesylate (i.e., Pexeva®). The two salts are pharmacologically similar, but cannot be interchaged at the same dose. | |||
==Indications== | |||
The drug is approved by the U.S. [[Food and Drug Administration]] for [[depression]], [[generalized anxiety disorder]], [[obsessive-compulsive disorder]], [[panic disorder]], [[post-traumatic stress disorder]] and [[social phobia]]. It is often prescribed for the "off-label" indications of Depression associated with [[manic depressive disorder]], [[fibromyalgia]], [[premenstrual dysphoric disorder]] and [[vasomotor symptoms associated with menopause]]. | |||
There have been limited trials with the drug as a prophylactic for [[migraine]]. While the [[second-generation antidepressant]]s generally have not shown effectiveness in [[chronic pain]], while [[tricyclic antidepressant]]s often are useful, paroxetine has been compared to the tricyclic [[imipramine]] and appeared, in a small trial, to be more effective. | |||
==Pharmacology== | |||
===Administration=== | |||
===Distribution=== | |||
===Metabolism=== | |||
Paroxetine is metabolized in the liver by [[cytochrome P-450 CYP2D6]]. | |||
===Excretion=== | |||
===Toxicity=== | |||
==Drug interactions== | |||
Paroxetine may increase death from [[breast cancer]] among women taking [[tamoxifen]] due to inhibiting metabolism of [[tamoxifen]] to its active metabolite by [[cytochrome P-450 CYP2D6]].<ref>{{Cite journal | doi = 10.1136/bmj.c693 | volume = 340 | issue = feb08_1 | pages = c693 | last = Kelly | first = Catherine M | coauthors = David N Juurlink, Tara Gomes, Minh Duong-Hua, Kathleen I Pritchard, Peter C Austin, Lawrence F Paszat | title = Selective serotonin reuptake inhibitors and breast cancer mortality in women receiving tamoxifen: a population based cohort study | Paroxetine may increase death from [[breast cancer]] among women taking [[tamoxifen]] due to inhibiting metabolism of [[tamoxifen]] to its active metabolite by [[cytochrome P-450 CYP2D6]].<ref>{{Cite journal | doi = 10.1136/bmj.c693 | volume = 340 | issue = feb08_1 | pages = c693 | last = Kelly | first = Catherine M | coauthors = David N Juurlink, Tara Gomes, Minh Duong-Hua, Kathleen I Pritchard, Peter C Austin, Lawrence F Paszat | title = Selective serotonin reuptake inhibitors and breast cancer mortality in women receiving tamoxifen: a population based cohort study | ||
| journal = BMJ | accessdate = 2010-02-10 | date = 2010-02-08 | url = http://www.bmj.com/cgi/content/abstract/340/feb08_1/c693 }}</ref> | | journal = BMJ | accessdate = 2010-02-10 | date = 2010-02-08 | url = http://www.bmj.com/cgi/content/abstract/340/feb08_1/c693 }}</ref> | ||
Latest revision as of 10:00, 10 February 2010
In medicine, paroxetine is a second-generation antidepressant used for treating major depression. Its pharmacological action is a serotonin uptake inhibitor.
In the United States, it is marketed paroxetine hydrochloride (e.g., Paxil®, Paxil CR®) and as paroxetine mesylate (i.e., Pexeva®). The two salts are pharmacologically similar, but cannot be interchaged at the same dose.
Indications
The drug is approved by the U.S. Food and Drug Administration for depression, generalized anxiety disorder, obsessive-compulsive disorder, panic disorder, post-traumatic stress disorder and social phobia. It is often prescribed for the "off-label" indications of Depression associated with manic depressive disorder, fibromyalgia, premenstrual dysphoric disorder and vasomotor symptoms associated with menopause.
There have been limited trials with the drug as a prophylactic for migraine. While the second-generation antidepressants generally have not shown effectiveness in chronic pain, while tricyclic antidepressants often are useful, paroxetine has been compared to the tricyclic imipramine and appeared, in a small trial, to be more effective.
Pharmacology
Administration
Distribution
Metabolism
Paroxetine is metabolized in the liver by cytochrome P-450 CYP2D6.
Excretion
Toxicity
Drug interactions
Paroxetine may increase death from breast cancer among women taking tamoxifen due to inhibiting metabolism of tamoxifen to its active metabolite by cytochrome P-450 CYP2D6.[1]
References
- ↑ Kelly, Catherine M; David N Juurlink, Tara Gomes, Minh Duong-Hua, Kathleen I Pritchard, Peter C Austin, Lawrence F Paszat (2010-02-08). "Selective serotonin reuptake inhibitors and breast cancer mortality in women receiving tamoxifen: a population based cohort study". BMJ 340 (feb08_1): c693. DOI:10.1136/bmj.c693. Retrieved on 2010-02-10. Research Blogging.