Management of Depression: Evidence-Based Approach
For depression management, second-generation antidepressants (particularly SSRIs) are recommended as first-line pharmacotherapy, while cognitive behavioral therapy (CBT) and other evidence-based psychotherapies are equally effective first-line options, with combination therapy showing superior outcomes for moderate to severe depression. 1, 2
First-Line Treatment Options
Psychotherapy
- Cognitive Behavioral Therapy (CBT) - Highly effective for mild to moderate depression
- Behavioral Activation (BA) - Focuses on increasing engagement in positive activities
- Interpersonal Therapy - Addresses interpersonal relationships and social functioning
- Psychodynamic Therapy - Effective option focusing on unconscious processes
Pharmacotherapy
SSRIs (Selective Serotonin Reuptake Inhibitors):
SNRIs (Serotonin-Norepinephrine Reuptake Inhibitors):
- Slightly more effective than SSRIs but with higher rates of adverse effects 1
- Options include venlafaxine (37.5-225 mg daily)
Other options:
Treatment Selection Algorithm
For mild to moderate depression:
- Start with either psychotherapy (CBT preferred) or an SSRI
- Base choice on patient preference, availability, and cost
For moderate to severe depression:
- Consider combination therapy (medication + psychotherapy) 2
- If using medication alone, start with an SSRI at the lower end of therapeutic range
Medication selection factors:
- Side effect profile (63% experience at least one side effect) 1
- Cost considerations
- Patient preferences
- Comorbidities (e.g., SNRIs for pain disorders)
Dosing and Monitoring
Initial Dosing
- Start at lower end of therapeutic range ("start low, go slow") 1, 2
- For fluoxetine: 20 mg/day is sufficient for most cases 4
- For sertraline: 50 mg/day is the optimal starting dose 3
- For older adults: Use approximately 50% of standard adult starting dose 1
Monitoring Schedule
- Assess response within 1-2 weeks of starting treatment 2
- Formal assessment at 4 weeks and 8 weeks using standardized instruments 1
- Monitor for:
- Therapeutic response
- Side effects (especially nausea/vomiting - most common reason for discontinuation)
- Suicidal thoughts (highest risk in first 1-2 months of treatment)
- Unusual changes in behavior, agitation, or irritability 2
Treatment Adjustment
If little improvement after 6-8 weeks despite good adherence: 1
- Adjust medication dosage
- Switch to a different antidepressant
- Add psychotherapy if on medication alone
- Consider mental health consultation
Common pitfalls to avoid:
- Inadequate trial duration (switching too early)
- Overlooking drug interactions (especially with fluoxetine and paroxetine)
- Failing to monitor for side effects
- Not addressing comorbid conditions
Treatment Duration
- First episode of depression: Continue treatment for 4-12 months after remission 1, 2
- Recurrent depression: Consider maintenance treatment for 1+ years 1, 2
- Monitor monthly for 6-12 months after full resolution of symptoms 1
- For multiple recurrences: Consider monitoring for up to 2 years 1
Special Populations
Older Adults
- Preferred agents: citalopram, escitalopram, sertraline, mirtazapine, venlafaxine, bupropion 1
- Avoid paroxetine and fluoxetine due to higher rates of adverse effects 1
- Use lower starting doses (approximately 50% of standard adult dose) 1
Adolescents
- Fluoxetine is FDA-approved for depression in children and adolescents 1
- Escitalopram is approved for adolescents 12 years and older 1
- Starting doses are generally lower than for adults 1
- Close monitoring for suicidality is essential, especially in first weeks of treatment 1
Side Effects Management
- Common side effects include diarrhea, dizziness, dry mouth, fatigue, headache, sexual dysfunction, sweating, tremor, and weight gain 1
- Nausea and vomiting are most common reasons for discontinuation 1
- SSRIs should be slowly tapered when discontinued to avoid withdrawal effects 1
By following this evidence-based approach to depression management, clinicians can optimize outcomes while minimizing adverse effects and addressing the individual needs of patients with depression.