My Antidepressant Doesn’t Seem to Be Helping, What Should I Do
It can be disappointing or worrying when you have started an antidepressant and do not feel noticeably better.
It can be disappointing or worrying when you have started an antidepressant and do not feel noticeably better.
That does not automatically tell you that the medicine has failed, nor does it mean you should change the dose or stop taking it yourself. Antidepressant response varies between people, and the healthcare professional responsible for your treatment needs to consider how long you have been taking it, how it has been taken, what it was prescribed for, side effects and what has changed in your symptoms.
Start with what ‘not helping’ means for you
Try to describe what you expected to improve and what is happening now.
Perhaps low mood is unchanged but sleep is different. Perhaps anxiety remains high. You may feel some improvement but not enough to function as you hoped, or side effects may be outweighing any benefit you have noticed.
That detail is more useful to a clinician than simply saying the medicine is “not working”.
Time matters, but a general timeframe cannot decide your treatment
Antidepressants usually take time to produce their intended benefit. NICE says that, where an antidepressant is going to work for depression, an effect is usually seen within about four weeks.
That is population-level guidance, not a deadline for an individual prescription.
Do not use a particular number of weeks from a website to decide whether to continue, stop or alter medication. Discuss your actual experience with your prescriber.
A review looks at more than the medicine
NICE recommends reviewing treatment where depression has not responded.
That conversation may include whether the medicine has been taken as prescribed, whether physical or other mental-health conditions are relevant, whether difficult personal or social circumstances are continuing, and whether the original treatment plan still fits the person’s needs.
What should happen after that assessment is a clinical decision.
Prepare for the review without trying to prescribe for yourself
It may help to note when you started treatment, what changes you have noticed, unwanted effects and how you are managing everyday activities.
Take an up-to-date list of other prescribed medicines, over-the-counter products or supplements if your clinician does not already have it.
You do not need to arrive with a preferred replacement medicine. The purpose of the review is to make sense of the situation with an appropriately qualified professional.
If your mental health has become worse
Do not assume worsening symptoms are simply something you must wait out.
Contact your GP, prescribing service or another appropriate healthcare professional and explain what has changed.
If you or somebody else is in immediate danger or there is a life-threatening emergency, call 999 or go to A&E. For an urgent mental-health crisis that is not a life-threatening emergency, contact NHS 111 and select the mental health option, or use your local NHS urgent mental-health service.
Last reviewed
6 September 2026
Important medication and mental health information
This guide provides general information only and is not medical advice. It is not intended to recommend any particular medicine, treatment, dose, change to medication or course of action.
Medicines can affect people differently. The appropriate treatment will depend on your individual circumstances, health, other medicines you take and the reason treatment has been prescribed.
Do not start, stop, reduce, increase, change or switch prescribed medication based on information in this guide. If you have questions or concerns about your medication, side effects, missed doses, withdrawal symptoms or whether treatment is helping, speak to your GP, prescribing clinician, pharmacist or another appropriately qualified healthcare professional.
If you think you may be experiencing a serious reaction to medication, seek urgent medical advice.
If you or somebody else is in immediate danger or there is a life-threatening emergency, call 999 or go to A&E. If you are experiencing a mental health crisis and need urgent help but it is not a life-threatening emergency, contact NHS 111 and select the mental health option, or use your local NHS urgent mental health service.