Understanding Antidepressants, Part 5: Augmentation Strategies for Treatment-Resistant Depression
By Tannia Salazar, APRN | Rooted in Serenity Behavioral Health 🌿
For many people, first-line antidepressants like SSRIs or SNRIs bring meaningful relief. But for others, symptoms linger despite multiple trials. This is sometimes called treatment-resistant depression (TRD).
TRD does not mean you’re out of options. Instead, we may consider augmentation strategies — carefully adding another medication to strengthen the effect of your antidepressant and address stubborn symptoms.
What Does Augmentation Mean?
Rather than switching to a brand-new antidepressant, augmentation means adding a second medication that works in a different way. This approach can help improve:
Low energy or motivation
Difficulty focusing or concentrating
Trouble sleeping
Persistent anxiety
Common Augmentation Medications
Here are some medications often considered when depression or anxiety doesn’t fully respond to first-line treatment:
Rexulti (brexpiprazole) – FDA-approved add-on for major depression; can improve mood, energy, and anxiety.
Abilify (aripiprazole) – another add-on option that boosts antidepressant effects, often helping with motivation and mood stability.
Lamotrigine (Lamictal®) – may reduce depressive symptoms and emotional reactivity; useful when mood feels unstable.
Quetiapine (Seroquel®) – sometimes prescribed at low doses for depression and anxiety, especially when insomnia is also present.
Buspirone (Buspar®) – gentle, non-addictive option often used as an add-on for generalized anxiety disorder.
Trazodone (low dose) – not a primary antidepressant, but may be added to improve sleep quality when mood and anxiety disrupt rest.
Who Might Benefit from Augmentation?
Your provider may suggest augmentation if:
You’ve tried at least two antidepressants without full relief
You notice partial benefit, but symptoms like fatigue, poor sleep, or anxiety persist
You’re struggling with focus or low motivation despite treatment
You want to avoid restarting the trial-and-error cycle of switching medications
Common Side Effects
All medications can cause side effects, though many are mild and improve over time. Here’s what patients commonly notice with augmentation medications:
| Medication | Possible Side Effects | What to Expect / When to Reach Out |
|---|---|---|
| Rexulti | Restlessness, weight gain, drowsiness | Often mild; call if movement feels uncontrollable or weight changes are rapid |
| Abilify | Jitteriness, insomnia, stomach upset | May improve with dose adjustment; call if severe or persistent |
| Lamotrigine | Headache, dizziness, skin rash | Call right away if new rash develops (rare but important) |
| Quetiapine | Drowsiness, weight gain, dry mouth | Helpful for sleep at low doses; call if sedation is too strong |
| Buspirone | Dizziness, nausea, lightheadedness | Usually mild and fade with time; take consistently for best effect |
| Trazodone (low dose) | Drowsiness, morning grogginess, dry mouth | Typically improves sleep; call if excessive sedation occurs |
Final Thought
If antidepressants alone haven’t been enough, augmentation strategies can provide new hope. By adding targeted medications like Rexulti, Abilify, Lamotrigine, or Buspirone, we can address persistent symptoms and support both mood and anxiety.
You are not out of options. At Rooted in Serenity Behavioral Health, I, Tannia Salazar, APRN, will work with you to find the safest, most effective combination — personalized to your symptoms, your health, and your goals.
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📖 Interested in reading the whole series:
Understanding Antidepressants, Part 1: What Are SSRIs and How Do They Work?
Understanding Antidepressants, Part 2: What Are SNRIs, and How Do They Work?
Understanding Antidepressants, Part 3: What are Atypical Antidepressants and How Do They Work?
Understanding Antidepressants, Part 4: What are Mood Stabilizers and How Do They Work?
📖 Read more about Tannia Salazar. APRN
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🌿 Tannia Salazar, APRN, Founder of Rooted in Serenity Behavioral Health LLC, offering telepsychiatry services across Connecticut for adults navigating anxiety, ADHD, trauma, and more.