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Clinical Review |
ANDERS D. WESTANMO, PHARM.D., is Staff Pharmacist, Pharmacy Department, Veterans Affairs Medical Center, Minneapolis, MN. JON GAYKEN is a medical student, School of Medicine, University of Minnesota, Minneapolis. ROBERT HAIGHT, PHARM.D., BCPP, is Pharmacy Clinical SpecialistPsychiatry, Pharmaceutical Services, University of Minnesota Medical CenterFairview, University of Minnesota Childrens HospitalFairview, Minneapolis, and Clinical Assistant Professor, College of Pharmacy, University of Minnesota.
Address correspondence to Dr. Westanmo at the Pharmacy Department, Veterans Affairs Medical Center, 1 Veterans Drive, Minneapolis, MN 55417.
Summary. Duloxetine is a balanced selective serotonin and norepinephrine-reuptake inhibitor available in the United States for the treatment of major depressive disorder (MDD) and diabetic peripheral neuropathic pain (DPNP). Duloxetine has also been used for the treatment of stress urinary incontinence (SUI). Absorption of duloxetine begins two hours after oral administration, reaching a maximum plasma concentration in six hours. Half-life and volume of distribution are 12 hours and 1640 L, respectively. The recommended dosage of duloxetine is 4080 mg daily, depending on the indication, preferably split into two doses per day. For the treatment of major depression, duloxetine has achieved remission rates similar to that of existing selective serotonin-reuptake inhibitors (SSRIs). For SUI and pain associated with diabetic peripheral neuropathy, duloxetine has not demonstrated equivalence or superiority to existing therapies. The adverse effects of duloxetine are similar to those of traditional SSRIs. Nausea is common and has been cited as the primary reason for discontinuation of duloxetine in trials. Increases in blood pressure have been mild, but caution should be used in patients with hypertension. Patients with a creatinine clearance of <30 mL/min and patients with hepatic impairment should avoid duloxetine. Duloxetine should not be recommended as first-line therapy for SUI or DPNP. For MDD, duloxetine may be a useful alternative for patients who do not benefit from or are unable to tolerate other antidepressant therapy.
Conclusion. Duloxetine has been approved for the treatment of MDD and pain associated with diabetic peripheral neuropathy in adults.
Index terms: Antidepressants; Costs; Depression; Diabetic neuropathies; Dosage; Drug administration; Drug interactions; Duloxetine; Mechanism of action; Pharmacokinetics; Toxicity; Urinary incontinence
Purpose. The pharmacology, pharmacokinetics, efficacy, safety, drug interactions, dosage and administration, cost, and place in therapy of duloxetine for major depression, pain from diabetic peripheral neuropathy, and stress urinary incontinence are reviewed.
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R. G. Smith Painful Diabetic Peripheral Neuropathy J Am Podiatr Med Assoc, September 1, 2007; 97(5): 394 - 401. [Abstract] [Full Text] [PDF] |
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