DrugABC

UK medicines information — general guidance, not personalised advice.

Mental health medicines

Antidepressants, sleeping tablets, and related prescriptions used in the UK for low mood, anxiety, and some pain conditions — with GP-safe context.

What are mental health medicines?

Mental health medicines are prescription tablets or capsules (and sometimes injections) used to treat conditions such as depression, anxiety, bipolar disorder, and schizophrenia, when a UK clinician judges them appropriate. They are often used together with talking therapies and follow-up from your GP or mental health team. This hub focuses on common antidepressants, medicines for sleep or anxiety, and antipsychotics — not a complete list of every psychiatric treatment.

General UK information only — your GP, pharmacist, or specialist can personalise advice and check interactions with your prescriptions.

Quick answers

Short points people often scan before reading the full hub or speaking to a clinician.

  • What are they used for?

    They can improve mood, reduce anxiety, stabilise bipolar episodes, treat psychosis, or help with nerve pain and sleep in specific situations. The exact aim depends on your diagnosis and care plan from your GP or psychiatrist.

  • Common types

    SSRIs (e.g. Sertraline, Citalopram, Fluoxetine, Escitalopram), SNRIs (e.g. Venlafaxine, Duloxetine), tricyclics (e.g. Amitriptyline), short-term benzodiazepines (e.g. Diazepam), hypnotics (e.g. Zopiclone), Melatonin for some sleep problems, and antipsychotics (e.g. Quetiapine, Olanzapine, Aripiprazole).

  • Do you need them long term?

    Some people take antidepressants or antipsychotics for months or years; others use short courses for sleep or anxiety flare-ups. Duration is individual — your prescriber reviews benefits, side effects, and relapse risk before changes.

  • Common side effects

    Examples include nausea, sleep change, sexual side effects, weight change, drowsiness (especially with sleeping tablets), dry mouth, and movement effects with some antipsychotics. Report severe mood worsening or suicidal thoughts urgently.

What are the most common mental health medications in the UK?

SSRIs such as Sertraline, Citalopram, and Fluoxetine are among the most frequently prescribed antidepressants. SNRIs, Mirtazapine, and tricyclics such as Amitriptyline are also used for depression, anxiety, or nerve pain in selected cases.

Antipsychotics such as Quetiapine, Olanzapine, and Aripiprazole are standard treatments for schizophrenia, bipolar disorder, and some other conditions under specialist guidance.

Benzodiazepines and z-drugs are usually short-term options for anxiety or insomnia because of dependence risk — your GP sets the duration.

What is the safest mental health medication?

Safety depends on your age, other illnesses, pregnancy plans, and medicines you already take — not on a single “best” brand. Your GP or psychiatrist chooses the option with the most favourable balance for you.

Starting at a low dose and reviewing early side effects is common practice. Pharmacists can check interactions with painkillers, herbal products, and other prescriptions.

If you feel worse rather than better after starting treatment, contact your GP promptly — do not wait for a routine appointment if you have urgent concerns.

Can mental health tablets be stopped suddenly?

Stopping abruptly can cause withdrawal-like symptoms (especially with some antidepressants, benzodiazepines, and antipsychotics) and may increase relapse risk. Your prescriber usually plans a gradual taper.

Never stop because of side effects without advice — your team may switch medicine or adjust dose instead.

If you have thoughts of harming yourself, seek urgent help (NHS 111, crisis team, or 999).

Medicines in this category

Open a guide for uses, side effects, interactions, and safety topics. Your prescriber chooses what is appropriate for you.

Compare medicines in this topic

Side-by-side overviews for common search questions — not a prompt to switch treatment yourself.

More popular questions

Extra topics people ask about in search and in pharmacy consultations — check with your GP or pharmacist for advice tailored to you.

How long do antidepressants take to work?
Many people notice some change within 2–4 weeks, with further improvement over 6 weeks or more on a steady dose. Your prescriber usually reviews you before major dose changes — do not stop suddenly without advice.
Can you drink alcohol while taking antidepressants?
Alcohol can worsen drowsiness, low mood, and liver risk with some medicines. Your GP or pharmacist can advise what is sensible for your tablets and dose.
Can you take ibuprofen with antidepressants?
Many adults can use occasional Ibuprofen, but SSRIs and SNRIs increase bleeding risk with NSAIDs — check with your pharmacist, especially if you take blood thinners, steroids, or have stomach problems.
What should I do if I want to stop my mental health medicine?
Speak to your GP first. Stopping abruptly can cause withdrawal symptoms or relapse; dose reductions are usually planned gradually.
Are sleeping tablets like zopiclone safe long term?
They are usually for short courses because of dependence, memory, and accident risks. Your prescriber may suggest sleep hygiene, CBT-I, or other approaches for longer-term insomnia.