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Questions & Answers About Overactive Bladder, Second Edition
by Pamela Ellsworth and Alan Wein (Paperback - April 16, 2009)
Excerpt:
... "stool impaction oxybutynin [Ditropan], solifenacin [Vesicare], tolterodine [Detrol], trospium chloride [Sanctura]) Antidepressants (e." ...
More about this bookVesicare, Tarceva.(New & Approved): An article from: Skin & Allergy News
by Elizabeth Mechcatie (Digital - Aug 1, 2005) - HTML
More about this bookVesicare.(drug approval): An article from: Internal Medicine News
by Elizabeth Mechcatie (Digital - Aug 1, 2005) - HTML
More about this book
medicine: vesicare
vesicare description
Go to trade names and prices
Solifenacin (Vesicare) is a urinary antispasmodic of the anticholinergic class. It is used in the treatment of overactive bladder with or without urge incontinence. It is marketed and manufactured by Astellas and GlaxoSmithKline.
Pharmacology
Mechanism of action
Solifenacin is a competitive muscarinic acetylcholine receptor antagonist. The binding of acetylcholine to these receptors, particularly the M3 receptor subtype, plays a critical role in the contraction of smooth muscle. By preventing the binding of acetylcholine to these receptors, solifenacin reduces smooth muscle tone in the bladder, allowing the bladder to retain larger volumes of urine and reducing the number of micturition, urgency and incontinence episodes. Because of a long elimination half life, a once-a-day dose can offer 24 hour control of the urinary bladder smooth muscle tone.
Contraindications
Solifenacin should not be taken by people with a history of previous hypersensitivity to it, urinary retention, gastric retention, uncontrolled or poorly controlled closed-angle glaucoma, or severe liver disease (Child-Pugh class C). It is also contraindicated in long QT syndrome, as solifenacin,like tolterodine and darifenacin, binds to HERG channels and may prolong the QT interval.
Interactions
Solifenacin is metabolized in the liver by the cytochrome P450 enzyme CYP3A4. When administered concomitantly with drugs that inhibit CYP3A4, such as ketoconazole, the metabolism of solifenacin is impaired, leading to an increase in its concentration in the body and a reduction in its excretion. The manufacturer recommends that the dosage of solifenacin not exceed 5 mg a day if it is taken with a potent CYP3A4 inhibitor.
As stated above, solifenacin may also prolong the QT interval. Therefore, it should not be administered concomitantly with drugs which also have this effect, such as moxifloxacin or pimozide.
Side effects
The most common side effects of solifenacin are dry mouth, blurred vision, and constipation. As all anticholinergics, solifenacin may rarely cause heat prostration due to decreased perspiration.
Pharmacoeconomics
In a study of cost-effectiveness analysis, the average medical cost per overactive bladder patient with successful treatment is reported to be lowest for 5 mg solifenacin ($6863 per annum) among anticholinergic drugs to treat overactive bladder in the United States (Pharmacotherapy 2006, 26 1694-1702).
| Name | Information | Price* | Quantity |
| Generic Solifenacin 5mg | 30 tablet | $78 | 30 tablet |
| Generic Solifenacin 10mg | 30 tablet | $55 | 30 tablet |
| VESIcare 5 mg | 30 tablet (Solifenacin) | $102 | 30 tablet |
| Vesicare 10mg | 30 tablets (solifenacin) | $105 | 30 tablets |
*) Prices related to some of online drugstores. There are only approximate prices. For some of drugs is needed a prescription.
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