An open-label study to evaluate switching from an SSRI or SNRI to tiagabine to alleviate antidepressant-induced sexual dysfunction in generalized anxiety disorder.

BACKGROUND: This study investigated tiagabine monotherapy in subjects with generalized anxiety disorder (GAD) who had been switched from selective serotonin reuptake inhibitors (SSRIs) or serotonin-norepinephrine reuptake inhibitors (SNRIs) as a result of antidepressant-induced sexual dysfunction. METHODS: Adults with DSM-IV GAD, an adequate therapeutic response (> or =50% decrease in Hamilton Rating Scale for Anxiety [HAM-A] total score) to SSRI or SNRI and sexual dysfunction were switched to open-label tiagabine 4-12 mg/day for 14 weeks. Assessments included the HAM-A, Hospital Anxiety & Depression Scale (HADS) and the Arizona Sexual Experiences Scale (ASEX); assessments were made at baseline and at Weeks 4, 8, and 14. RESULTS: Twenty six subjects were included in the analysis. Tiagabine showed no worsening in baseline symptoms of GAD, with non-significant changes from baseline in mean HAM-A total scores and HADS Anxiety and Depression subscale scores. There was a significant (p < 0.001) reduction in ASEX total scores from baseline following tiagabine, indicating an alleviation of sexual dysfunction. Tiagabine was reasonably tolerated; the most commonly reported adverse events were dizziness/light headedness (n = 6; 23%), nausea (n = 6; 23%) and fatigue (n = 2; 8%). CONCLUSIONS: Tiagabine may be useful in subjects who respond to previous antidepressant therapy but develop sexual dysfunction as an adverse event.

Antidepressant treatment in the primary care office: outcomes for adjustment disorder versus major depression.

BACKGROUND: Antidepressants are widely used by primary care physicians. Very little comparative data exists regarding the newer antidepressants in regards to efficacy in naturalistic primary care outpatient settings where the treatment of adjustment disorder and major depressive disorder is concerned. Our objective was to determine if there is a difference in antidepressant effectiveness between disorders in the newer antidepressants (SSRIs) in a primary care setting when a formal systematic depression treatment protocol is used. METHOD: A retrospective review of 63 major depression patients and 33 adjustment disorder patients in a primary care setting was undertaken. Patients had been prescribed mostly SSRIs. DSM-IV symptoms, PHQ-9 depression rating scale scores, and functional disability reports were systematically used to evaluate partial and full remission from patients' depressive states. RESULTS: Neither depressed patients, nor adjustment disordered patients demonstrated a difference in clinical response to any particular antidepressant. The main statistical difference was in response rates, where patients diagnosed with adjustment disorder were twice as likely to respond to standard antidepressant treatment as depressed patients. This retrospective database design with moderate sample size limits the statistical power of this study. CONCLUSION: Antidepressants are very effective in treating depression in the primary care setting and may even be an effective and efficient treatment for adjustment disorder with depressed mood.