Beyond Antidepressants: A Modern, Evidence-Based Approach to Treatment-Resistant Depression

When Depression Doesn't Get Better

If you've tried antidepressant after antidepressant, invested in therapy, and still wake up feeling emotionally exhausted, disconnected, or hopeless, you are not alone. Approximately one-third of people with major depressive disorder do not achieve remission after multiple adequate medication trials, a condition known as treatment-resistant depression (TRD). TRD is not a reflection of weakness or a personal failure. Instead, it often means that depression is more biologically and psychologically complex than initially recognized. At Healing Grove Integrative Behavioral Medicine, we believe the question is not simply, "What medication should we try next?" Rather, we ask: "What is driving your depression, and what has been overlooked?"

This shift in perspective often changes everything.

What Is Treatment-Resistant Depression?

Treatment-resistant depression generally refers to depression that has not adequately responded after two or more appropriate antidepressant trials taken at therapeutic doses for sufficient duration. However, many individuals labeled as "treatment resistant" have never received a truly comprehensive evaluation. Depression can persist because of:

• Undiagnosed trauma or PTSD

• Bipolar spectrum disorders

• ADHD or autism masking mood symptoms

• Chronic anxiety or obsessive-compulsive disorder

• Sleep disorders

• Hormonal abnormalities

• Medical illnesses

• Medication side effects

• Substance use

• Chronic inflammation or metabolic disease

• Polypharmacy (too many medications with overlapping effects)

Sometimes the problem isn't that treatments have failed. It's that we've been treating the wrong problem.

This philosophy aligns with the approach emphasized throughout Dr. Phan's advanced psychopharmacology fellowship—carefully reevaluating diagnosis, simplifying overly complex medication regimens when appropriate, and addressing the underlying contributors to persistent depression rather than automatically adding more medications.

Looking Beyond Symptoms

Modern psychiatry is increasingly recognizing that depression is not a single illness. Two people may both say: "I feel depressed."

Yet one may be experiencing:

• chronic childhood trauma

• inflammatory illness

• bipolar depression

• hormonal changes

• grief

• ADHD-related burnout

• severe sleep deprivation

Each deserves a different treatment plan.

At Healing Grove, assessment goes beyond diagnostic checklists. We carefully evaluate:

• psychiatric history

• medical history

• sleep

• medications

• laboratory findings

• trauma history

• lifestyle

• relationships

• cognitive functioning

• previous treatment response

This whole-person assessment often reveals opportunities that previous treatment may have missed.

Why Simply Adding More Medications Often Isn't the Answer

One of the most common situations we encounter is polypharmacy—patients taking multiple psychiatric medications that were added over many years without periodically reassessing whether each medication is still helping. While combination treatment is sometimes appropriate, more medications do not automatically produce better outcomes. Instead, they can increase:

• fatigue

• emotional blunting

• cognitive slowing

• weight gain

• sexual side effects

• metabolic complications

• drug interactions

A thoughtful medication review asks important questions:

• Is every medication still necessary?

• Which medication is actually helping?

• Are side effects being mistaken for symptoms of depression?

• Is one medication treating the side effects of another?

These questions are central to individualized psychiatric care and are frequently emphasized in advanced psychopharmacology as part of good prescribing practice.

The Importance of Sleep

Sleep is not simply another symptom of depression. It is often one of its strongest drivers. Poor sleep can worsen:

• mood

• concentration

• anxiety

• emotional regulation

• motivation

• pain

• treatment response

Likewise, untreated sleep apnea, chronic insomnia, or medications that disrupt restorative sleep may prevent meaningful recovery. Improving sleep often enhances the effectiveness of both psychotherapy and medication. Sleep repeatedly emerged as a foundational target during Dr. Phan's experience for complex mood disorders, with attention to identifying medications, substances, and medical conditions that interfere with restorative sleep.

Trauma and Depression Are Often Intertwined

Many individuals with chronic depression also carry significant histories of trauma. Trauma changes the nervous system. Instead of simply creating sadness, it may produce:

• emotional numbness

• hypervigilance

• chronic fatigue

• shame

• difficulty experiencing joy

• relationship struggles

• persistent feelings of emptiness

Without addressing trauma, medications alone may never provide lasting relief. This is why psychotherapy remains an essential component of comprehensive treatment.

Newer Treatments Offering Hope

Psychiatric treatment has advanced tremendously over the past decade. Several interventions have shown promising results for individuals whose depression has not improved with traditional antidepressants.

1) Ketamine Therapy: Ketamine has become one of the most exciting developments in modern psychiatry. Research demonstrates that ketamine may:

• rapidly reduce depressive symptoms

• decrease suicidal thinking

• improve emotional flexibility

• promote new neural connections

• help individuals engage more effectively in psychotherapy

Unlike traditional antidepressants, which often require weeks before improvement occurs, ketamine may produce benefits within hours or days for some individuals. Careful patient selection is essential, while also integrating ketamine with psychotherapy when appropriate and using it as part of a broader treatment plan rather than a stand-alone intervention.

2) Lamotrigine: Although originally developed as an anticonvulsant, lamotrigine has become an important option for certain individuals with:

• bipolar depression

• chronic depressive symptoms

• treatment-resistant depression

• mood instability

Unlike many medications, lamotrigine is generally weight neutral and often well tolerated, though it requires careful, slow titration because of the rare risk of serious rash.

Lifestyle Medicine Matters

Medication is only one piece of recovery. Emerging research continues to demonstrate meaningful benefits from addressing:

• exercise

• nutrition

• inflammation

• metabolic health

• diabetes

• obesity

• sleep

• alcohol use

• cannabis use

• chronic stress

These interventions do not replace medical treatment—but they often enhance it.

Integrated Care Produces Better Outcomes

One of the greatest frustrations many patients experience is fragmented care. One clinician manages medications. Another provides therapy. Another addresses medical concerns. Thus, important information is easily lost.

As a Prescribing Psychologist, Dr. Phan integrates psychotherapy, psychological assessment, and psychopharmacology into one comprehensive treatment model. If she works with a patient only for medication management, she will collaborate closely with other treatment providers to ensure this integrated approach. This allows us to continually ask:

• Is therapy working?

• Is medication helping?

• Has the diagnosis evolved?

• What barriers remain?

Rather than treating isolated symptoms, we treat the whole person.

There Is Still Hope

Treatment-resistant depression does not mean untreatable depression. Many individuals improve once we:

• revisit the diagnosis

• simplify medications when appropriate

• optimize sleep

• address trauma

• treat underlying medical conditions

• integrate psychotherapy

• consider evidence-based newer treatments such as ketamine

• create a personalized treatment plan rather than relying on a one-size-fits-all approach

Recovery is rarely about finding one "magic medication." More often, it is the result of understanding the unique biological, psychological, and life experiences that contribute to each person's depression.