
Mental Health Medicines
Mental health medicines are used to support people experiencing conditions such as depression, anxiety disorders, panic disorder, obsessive compulsive disorder, bipolar disorder, and other mood-related conditions.
Medication is not the only treatment for mental health conditions. Many people benefit from a combination of psychological therapy, lifestyle changes, and medication where appropriate.
Treatment decisions are individualised and based on:
- symptom severity
- duration of symptoms
- risk assessment
- previous treatment response
- physical health considerations
- patient preference
This page explains the main types of mental health medicines used in primary care, how they work, and what monitoring is required.
These articles are intended as educational sources, not diagnostic nor taking place of a proper medical assessment. If you need help, please book an appointment with one of our GP’s.
When medication may be considered
Medication may be considered when:
- symptoms are moderate to severe
- symptoms persist despite self-help or psychological therapy
- risk of deterioration is high
- previous episodes responded well to medication
Medication is usually part of a broader care plan rather than a standalone solution.
Main Classes of Mental Health Medicines
Antidepressants (SSRIs)
Selective serotonin reuptake inhibitors (SSRIs) are commonly prescribed for depression and anxiety disorders.
Common examples include:
- sertraline
- citalopram
- fluoxetine
- escitalopram
They work by increasing serotonin activity in the brain, which can help regulate mood and anxiety.
Important points:
- They usually take several weeks to show full benefit
- Temporary side effects may occur early in treatment
- They are not addictive
Regular review is important during the first few weeks of treatment.
Other Antidepressants
Other antidepressants may be used depending on symptoms and previous response.
Examples include:
- mirtazapine
- venlafaxine
- duloxetine
These medicines work through different mechanisms and may be considered if SSRIs are not suitable or effective.
Monitoring may include:
- blood pressure (for some medicines)
- side effect review
- symptom tracking
Medicines for Anxiety and Short-Term Distress
Short-term medications may occasionally be used for acute anxiety symptoms. These are prescribed cautiously and usually for limited duration.
Beta blockers for physical symptoms
Beta blockers such as propranolol may be prescribed to reduce the physical symptoms of anxiety, including:
- palpitations
- tremor
- sweating
- shaking
They do not directly treat anxious thoughts, but can reduce the body’s adrenaline response in situations such as public speaking or performance anxiety.
They are generally used on an as-needed basis rather than as long-term treatment for generalised anxiety disorder.
Because beta blockers also affect heart rate and blood pressure, suitability is assessed individually.
Short-term sedative medicines
Certain sedative medicines may be used for short periods in specific circumstances. These carry a risk of dependence and are not typically recommended for long-term anxiety management in primary care.
Treatment decisions are made cautiously and usually alongside non-medication strategies.
Mood Stabilising Medicines
Mood stabilising medicines are commonly used in bipolar disorder and certain complex mood conditions. These are usually initiated or guided by specialist services.
Examples include lithium and other specialist treatments.
Primary care may be involved in blood test monitoring and shared care arrangements.
Antipsychotic Medicines
Antipsychotic medicines are used for conditions such as psychosis, bipolar disorder, and sometimes as part of treatment for severe depression.
Common examples include:
- olanzapine
- quetiapine
- aripiprazole
These medicines require structured monitoring due to potential metabolic and neurological side effects.
Specialist involvement is common.
Starting Mental Health Medication
When starting medication, it is common to:
- begin at a low dose
- increase gradually if needed
- review within the first few weeks
- monitor side effects and mood
Some people notice temporary increased anxiety or sleep disturbance early in treatment. Regular review helps ensure treatment remains appropriate.
Side Effects and Safety
Most mental health medicines are well tolerated. Possible side effects may include:
- nausea
- sleep disturbance
- headaches
- changes in appetite
- sexual side effects
- emotional blunting
Side effects often improve with time, but persistent or distressing effects should be reviewed.
Some medicines can increase suicidal thoughts in a small number of people, particularly early in treatment. Early review is therefore important.
Duration of Treatment
Many people take antidepressants for several months after symptoms improve to reduce relapse risk.
Stopping medication should usually be gradual and supervised to reduce withdrawal symptoms.
Mental Health Medicines in Remote GP Care
Many medication reviews can be safely conducted remotely. However, if there are:
- concerns about safety
- suicidal thoughts
- severe mood change
- psychotic symptoms
urgent or in-person assessment may be required.
Frequently Asked Questions
1. Are antidepressants addictive?
Antidepressants such as SSRIs are not addictive. However, stopping them suddenly can cause withdrawal-type symptoms, so gradual reduction is advised.
2. How long do antidepressants take to work?
Some people notice improvement within 2 to 4 weeks, but full benefit may take longer. Early follow-up helps assess progress.
3. Will I need to take mental health medication forever?
Not necessarily. Many people take medication for several months or longer depending on their history and relapse risk. Treatment plans are reviewed individually.

When to contact a GP
You should consider contacting a GP if:
- symptoms worsen after starting treatment
- you experience troubling side effects
- you have thoughts of self-harm or suicide
- you feel emotionally numb or unlike yourself
- you wish to stop or change medication
If you feel at immediate risk of harming yourself or others, seek urgent help via 999 or local emergency services.

Further Reading and Hub Links
Visit our Medication and Prescribing hub or browse more health topics in the AccessGP Knowledge Base.
If you are struggling with mood, anxiety, or medication side effects, a GP can help guide you on the safest next step.
Last reviewed by Dr Zamiel Hussain, GMC registered GP
Updated: 14 February 2026
