IPS multicentric study: Antidepressant prescription patterns

BACKGROUND: There are very few studies from India which have evaluated the prescription pattern for antidepressants by psychiatrists for treatment of depression. AIM: To study the psychotropic prescription patterns of patients with first episode depression from diverse settings including teaching institutions in public and private sectors and even privately run psychiatric clinics. MATERIALS AND METHODS: Prescription data of 706 patients with first episode depression, who participated in the IPS multicentric study, were evaluated. RESULTS: Escitalopram was the most commonly prescribed antidepressant, comprising 40% of the total prescriptions. This was followed by sertraline (17.6%) and fluoxetine (16.3%). In total, selective serotonin reuptake inhibitors (SSRIs) formed 79.2% of all the prescriptions. Tricyclic antidepressants formed a small part (15.15%) of total prescriptions, with imipramine being the most commonly used tricyclic antidepressant. Serotonin-norepinephrine reuptake inhibitors (venlafaxine, desvenlafaxine and duloxetine) were prescribed to 11.3% of patients with equal share of venlafaxine and duloxetine. About one-sixth (N=104; 14.7%) of the patients were prescribed more than one antidepressant. Nearly three-fourth of the patients (N=523; 74.1%) were prescribed a benzodiazepine, with clonazepam being the most preferred agent, prescribed to nearly half of the participants (49%) and formed nearly two-third of the total benzodiazepine prescriptions (346 out of 523). CONCLUSION: Escitalopram is the most commonly prescribed antidepressant and SSRIs are the most commonly prescribed class of antidepressants. Poly pharmacy in the form of concomitant use of two antidepressants is practiced infrequently. However, benzodiazepines are used quite frequently as the co-prescription.