You did what you were told. You filled the prescription, took it every day, and waited the weeks your doctor said it would take. Maybe it helped a little. Maybe it did nothing at all. Then you tried a second medication, and the fog still did not lift. If that sounds like you right now, you are not out of options, and you are far from alone.
What Is Treatment-Resistant Depression?
Treatment-resistant depression, often shortened to TRD, describes depression that has not improved enough after treatment. There is no single standard definition, but in practice the term usually applies after a person has tried at least two antidepressants, at a proper dosage and for long enough, without enough relief. That is also the threshold the FDA uses for esketamine, one of the newer treatments covered below.
It is more common than many people realize. A 2026 panel from the Mayo Clinic Depression Center noted that TRD affects about one in three people with major depressive disorder.
The diagnosis, 'treatment-resistant depression,' can sound final. It is not. It simply means the first approach did not do enough, and it is time to look at an alternate route with more progressive treatment options.
Why Antidepressants Sometimes Stop Working or Never Start
There is rarely one clear reason. Mayo Clinic points to a few common ones.
Time is the first thing to check. Antidepressants typically take four to eight weeks to reach their full effect, and some people need longer. Stopping or switching too early can make a medicine look like it failed when it was never given a fair chance.
The dosage or the medicine itself may simply not suit you. People can respond differently to medications, and the first prescription is partly an educated guess.
Life can also get in the way. Ongoing stress, a physical health problem, or another mental health condition like anxiety or a substance use problem can all keep depression going, no matter how good the medication is. So can missed doses, which happen to almost everyone at some point.
None of this is a personal failure. It is information your prescriber can use. Before your next appointment, it can help to jot down which medicines you have tried, roughly how long you took each one, and what changed – whether good or bad. Even a rough list saves time and helps your prescriber see the pattern.
How Many Antidepressants Before It Is Called Treatment-Resistant?
Usually two. If you have tried two different antidepressants at an adequate dose and for an adequate length of time, and your symptoms are still there, your clinician may describe your depression as “treatment-resistant”. Some clinicians wait until three trials, and the label matters less than the conversation about what comes next.
Next Steps After Two Antidepressants Fail
The good news is that there is a long list of alternate options to try, and many people who did not respond to their first or second medicine do improve later. A psychiatrist or psychiatric nurse practitioner can help you work through them in a sensible order, usually through medication management.
Adjusting the Medication
Mayo Clinic lists several medication strategies. Your prescriber may decide to give your current medicine more time or change the dosage, if that is appropriate. They may switch you to a different antidepressant, sometimes from a different class that works in a different way. They may add a second antidepressant, or add a medicine typically used for a different condition, which is called medication augmentation.
These decisions depend on your medical history, any side effects you experience, and other health conditions, so they belong with your prescriber. Please do not change or stop medication on your own.
Adding or Changing Therapy
Medication is only one part of the picture. Talk therapy can work alongside it, and for some people it makes a real difference. Cognitive behavioral therapy, for example, focuses on the thinking and behavior patterns that keep low mood in place. If you have been on medication alone, individual therapy is worth adding to the plan.
Checking the Diagnosis
Sometimes depression does not respond because something else is going on as well. Bipolar disorder, for example, can look like depression for a long time and often needs a different treatment approach. Our post on whether bipolar disorder can be missed for years explains why. A fresh evaluation can rule things in or out before you try another medicine.
TMS Therapy
Transcranial magnetic stimulation, or TMS, uses magnetic pulses to stimulate areas of the brain involved in mood. It does not require anesthesia, and most people go back to their normal day right after a session. For adults whose depression has not responded to medication, it is one of the options the Mayo Clinic panel agreed on as a strong next step. BNBA offers TMS therapy at its Dartmouth and Worcester locations, and our guide to TMS therapy for patients near Taunton, Brockton and the South Coast explains what treatment involves.
Spravato (Esketamine)
Spravato is a nasal spray, a form of esketamine, approved by the FDA for adults with depression that has not responded well enough to at least two oral antidepressants. It is taken in a certified clinic, never at home, and you stay for at least two hours afterward so staff can monitor you. BNBA offers Spravato treatment at its Dartmouth and Worcester locations. If you are weighing it against IV ketamine, our comparison of Spravato and ketamine infusions walks through the differences.
Other Options
Electroconvulsive therapy, or ECT, is another established treatment for severe or hard-to-treat depression. Modern ECT is done under general anesthesia. Your clinician can help you determine whether it makes sense for you. Please note that BNBA does not offer ECT.
When to Get Help Right Away
Depression that will not lift is exhausting, and it can make hopeless thoughts louder. If you are having thoughts of suicide, please do not wait for an appointment. Call or text 988 to reach the Suicide and Crisis Lifeline, or call 911 in an emergency.
Treatment-Resistant Depression Care in Massachusetts at BNBA
At BNBA in Massachusetts, psychiatrists and nurse practitioners can review what you have already tried, adjust your medication plan, and help determine whether TMS or Spravato could be the right fit for you. Therapy and medication management are available in-person and via telehealth, while TMS and Spravato are offered in-person at the Dartmouth and Worcester locations.
Not sure who can prescribe what? Our guide to the difference between psychiatrists, nurse practitioners, psychologists, and therapists explains each role. When you are ready, call (508) 979-5557 or request an appointment online.
Frequently Asked Questions
How Long Should I Wait Before Deciding an Antidepressant Is Not Working?
Antidepressants usually take four to eight weeks to reach their full effect, and some people need longer. Talk to your prescriber before stopping or switching it, so the medicine gets a fair trial.
Is Treatment-Resistant Depression Permanent?
No. It means the first treatments did not help enough, not that nothing will. Many people improve after changes to medication, therapy, or treatments like TMS or Spravato.
Do I Need a Referral for TMS or Spravato at BNBA?
Call BNBA at (508) 979-5557 to ask about the intake process. A clinician will review your treatment history to see whether TMS or Spravato could be a good next step.
Can Therapy Help Treatment-Resistant Depression?
Yes. Talk therapy can work alongside medication or other treatments, and for some people it is the piece that was missing. Cognitive behavioral therapy is one common approach.