Why isn't my medication working?
Common reasons an antidepressant doesn't seem to be helping, and what usually comes next.
Has it had enough time
This is the most common reason a medication seems not to be working. The full effect builds slowly.
The fuller effect of an antidepressant usually takes about four to six weeks, and sometimes up to eight. Judging at two or three weeks is too early. The medication may well be working, just not far enough along yet to show it. Unless a prescriber advises otherwise, it's worth giving the medication the full planned trial before deciding it has failed.
Is the dose high enough
Antidepressants are often started at a low dose. That's deliberate, and it helps the body adjust. But a low starting dose is not always an effective dose.
Many people need the dose raised to reach a level that actually treats their symptoms. A medication that seems not to work at a starting dose often just hasn't been adjusted yet. Raising the dose is a routine next step, and it's one of the first things a prescriber will consider.
Other reasons it might not be working
If time and dose have both been addressed, there are a few other things a prescriber will look at.
Missed or inconsistent doses can blunt the effect, so taking the medication regularly matters. The medication may not be the right fit, since response is individual and what works well for one person may not for another. The diagnosis may need another look. For example, bipolar disorder is treated differently, and antidepressants alone don't work well for it. Another factor may be affecting mood, such as a thyroid problem, untreated sleep apnea, or ongoing heavy alcohol use. Side effects can make a medication hard to keep taking. And expectations matter too, because medication can reduce symptoms but does not remove life stressors.
What usually comes next
A prescriber has a clear set of options, and most of them are routine.
The choices include giving the medication more time, raising the dose, switching to a different medication, adding a second medication, or adding therapy. Adding a second medication is called augmentation. It can involve adding bupropion, an atypical antipsychotic, or lithium. Most people who don't respond to a first medication do respond to an adjusted plan. A first medication that doesn't work narrows things down and points to the next step.
What "treatment-resistant" means
This term describes depression that hasn't improved enough after two or more adequate medication trials. An adequate trial means a high enough dose for a long enough time.
The label sounds final, but it isn't a verdict. It's a signal to broaden the approach, and there are further options at that point. Many people who reach this stage still improve with a wider plan.
Sources
This guide draws on current prescribing information and public health references. It is reviewed for clinical accuracy and updated as guidance changes.
- National Institute of Mental Health. Mental health medications.
- MedlinePlus, U.S. National Library of Medicine.
- American Psychiatric Association. Practice guideline for the treatment of patients with major depressive disorder.
Managing a medication needs a prescriber
Any psychiatric medication has to be started and adjusted by a clinician who can follow you over time. If you don't have a prescriber, our guides section explains the options, including in-person care and telepsychiatry, and how to choose between them.
This guide is for general education. It is not medical advice and is not a substitute for evaluation, diagnosis, or treatment by a qualified clinician. Never start, stop, or change a medication without talking to your prescriber. If you are in crisis or thinking about harming yourself, call or text 988 in the U.S. to reach the Suicide and Crisis Lifeline.