Treatment of Depression: A Comprehensive Approach
The recommended treatment for depression includes both pharmacotherapy with second-generation antidepressants and psychotherapy, with medication selection based on adverse effect profiles, cost, and patient preferences rather than presumed differences in efficacy. 1
First-Line Treatment Options
Pharmacological Treatment
Second-generation antidepressants (SGAs) are recommended as first-line pharmacological treatment for moderate to severe depression 1, 2
- All SGAs have similar efficacy but differ in side effect profiles 1, 2
- Initial medication selection should be guided by:
- Adverse effect profiles
- Cost considerations
- Patient preferences
- Common options include:
- SSRIs (fluoxetine, sertraline, citalopram, escitalopram)
- SNRIs (venlafaxine, duloxetine)
- Others (bupropion, mirtazapine)
Dosing considerations:
- Start with lower doses and titrate up as needed 2, 3
- For fluoxetine: initial dose of 20 mg/day is recommended for adults 3
- Lower doses (5-10 mg) may be beneficial for some patients, particularly those with anxiety or panic symptoms 4
- Optimal doses for most antidepressants are in the lower range of their licensed doses 5
Psychological Treatments
- Psychotherapy is equally effective as pharmacotherapy for depression 1
- Cognitive behavioral therapy (CBT)
- Interpersonal therapy
- Psychodynamic therapies
Combined Approach
- For patients with moderate to severe depression, a combination of pharmacotherapy and psychotherapy may be more effective than either treatment alone 1, 2
Monitoring and Follow-up
Regular assessment of treatment response is essential 1
- Begin monitoring within 1-2 weeks of starting treatment
- Assess for therapeutic response, side effects, and emergence of suicidal thoughts
- Use standardized rating scales when possible
Suicide risk monitoring:
- Highest risk is during first 1-2 months of treatment 1
- Monitor for emergence of agitation, irritability, or unusual changes in behavior
- More frequent visits may be needed during initial treatment phase
Treatment Adjustment
If inadequate response after 6-8 weeks of treatment: 1
- Consider dose adjustment
- Switch to a different antidepressant
- Add psychotherapy if patient is on medication only
- Add medication if patient is on psychotherapy only
Common reasons for treatment failure:
- Inadequate dose or duration
- Poor medication adherence
- Unrecognized comorbid conditions
- Drug interactions (particularly with fluoxetine and paroxetine) 2
Treatment Duration
For first episode of depression: 1
- Continue treatment for 4-9 months after achieving remission
For recurrent depression (2+ episodes): 1
- Longer duration of therapy is recommended
- Consider maintenance treatment for 1+ years
Special Considerations
Side Effects Management
Common side effects of SGAs: 1, 2
- Gastrointestinal (nausea, diarrhea)
- Neurological (headache, dizziness)
- Sleep disturbances (insomnia, somnolence)
- Sexual dysfunction
Medication-specific considerations:
Common Pitfalls to Avoid
- Inadequate treatment duration - Many clinicians discontinue treatment too early
- Insufficient dose titration - Failure to optimize dosing before switching medications
- Overlooking comorbidities - Anxiety, substance use, and medical conditions can affect treatment response
- Poor monitoring - Failure to assess response and side effects regularly
- Abrupt discontinuation - Can lead to withdrawal symptoms, particularly with shorter-acting agents 2
Algorithm for Treatment Selection
- Assess depression severity
- For mild depression:
- Consider psychotherapy first
- Monitor closely before initiating medication
- For moderate to severe depression:
- Initiate SGA (starting with lower doses)
- Consider concurrent psychotherapy
- Select medication based on side effect profile and patient preference
- Monitor response at 1-2 weeks, then regularly
- If inadequate response after 6-8 weeks:
- Adjust dose
- Switch medication
- Add/change psychotherapy approach
- Continue treatment for appropriate duration based on episode history
By following this evidence-based approach to depression treatment, clinicians can optimize outcomes while minimizing adverse effects and improving quality of life for patients with depression.