First-Line Treatment for Depression Unspecified

Initial Treatment Approach

The American College of Physicians recommends second-generation antidepressants as first-line treatment, with evidence showing similar benefits across most agents in this class 2, 1
SSRIs, SNRIs, and other second-generation antidepressants demonstrate no clinically significant differences in efficacy for acute major depressive disorder 1
Medications show modest superiority over placebo with a number needed to treat of 7-8 for SSRIs, with more pronounced benefits in severe depression 1

Cognitive behavioral therapy (CBT) is supported by moderate-certainty evidence to achieve similar treatment effects as second-generation antidepressants and represents an equally valid first-line option 2, 3
The choice between pharmacotherapy and psychotherapy should be guided by patient preference, depression severity, and treatment availability 2

Start with sertraline 50 mg daily, escitalopram, or citalopram as these have favorable adverse effect profiles 1, 4
Bupropion is associated with lower rates of sexual dysfunction compared to fluoxetine or sertraline and should be considered when sexual side effects are a concern 1
Avoid paroxetine as first-line due to higher rates of sexual dysfunction and anticholinergic effects 1, 4
Tertiary tricyclics are NOT first-line treatment 5

Begin monitoring within 1-2 weeks of treatment initiation, focusing on therapeutic response, adverse effects, and patient status 1
Close monitoring for increases in suicidal thoughts and behaviors is particularly important in the first 1-2 weeks after starting therapy 1
SSRIs are associated with increased risk for suicide attempts compared with placebo, necessitating vigilant early monitoring 1

Response to treatment (defined as 50% reduction in measured severity) should be assessed at 6-8 weeks 1
If adequate response is not achieved within 6-8 weeks, treatment modification should be considered 1

For elderly patients, use a "start low, go slow" approach with lower initial doses and gradual titration 4

For an initial episode of major depression, continue treatment for 4-12 months 1
After achieving remission, treatment should continue for at least 4-9 months 1, 4
Patients with recurrent depression may benefit from prolonged treatment of at least one year to prevent recurrence 1, 4

Antidepressants have higher risks for discontinuation due to adverse events compared to most nonpharmacologic treatments, requiring proactive adverse effect management 2
Do not wait beyond 6-8 weeks to reassess treatment strategy if response is inadequate 1