Lexapro (Escitalopram) – Patient Information (United Kingdom)
Lexapro contains the active ingredient escitalopram, a medicine used to treat conditions such as depression and certain anxiety disorders. This page explains how it works, how it’s usually taken, what to expect, and how to use it safely. It is designed to be patient-friendly and UK-focused.
Important: If you have concerns about side effects, worsening symptoms, or interactions with other medicines, speak to a healthcare professional promptly.
Quick overview
| Feature | Details |
|---|---|
| Medicine | Lexapro (escitalopram) |
| Type | Selective Serotonin Reuptake Inhibitor (SSRI) |
| Common uses | Depression; generalised anxiety disorder (GAD); and in some settings, other anxiety-related conditions |
| How it works | Increases serotonin activity in the brain |
| Typical onset | Some people notice changes within 1–2 weeks; full effect often takes several weeks |
| Food | Usually can be taken with or without food |
| Alcohol | Not recommended; can worsen side effects and impair judgement |
| Key safety note | Risk of serotonin-related side effects with interacting medicines; possible withdrawal symptoms if stopped suddenly |
What is Lexapro (escitalopram)?
Escitalopram is an antidepressant medicine in the SSRI class. SSRIs work by affecting chemicals in the brain, helping to improve the balance of mood and anxiety-related signals. Lexapro is commonly used for:
- Depressive episodes (often described as depression)
- Generalised anxiety disorder (GAD) (persistent excessive worry)
Your clinician will advise the most appropriate use for your individual situation. Lexapro may be prescribed to help reduce symptoms and support longer-term recovery.
How Lexapro works (mechanism of action)
The primary action of escitalopram is to inhibit serotonin reuptake in the brain. Serotonin is a neurotransmitter involved in mood, sleep, appetite, and anxiety regulation. By blocking the reuptake of serotonin into nerve cells, escitalopram helps increase serotonin availability in synaptic spaces, which can improve symptoms over time.
SSRIs are not instant-acting. Early changes may occur before mood fully improves. This gradual pattern is common and often reflects how the brain adapts over several weeks.
Pharmacokinetics: how the body handles escitalopram
“Pharmacokinetics” describes how a medicine is absorbed, distributed, metabolised, and eliminated. Understanding this can help explain why dosing is once daily for many people.
- Absorption: Escitalopram is absorbed from the gastrointestinal tract after oral dosing.
- Distribution: It distributes throughout the body tissues, including the central nervous system.
- Metabolism: Escitalopram is metabolised mainly in the liver.
- Elimination: It is excreted from the body, with clearance influenced by liver function and other factors.
- Half-life (general concept): The medicine remains in the body long enough to support once-daily dosing for many patients.
Kidney impairment and liver impairment may affect how the body processes escitalopram. For this reason, clinicians may adjust the dose, especially if you have liver problems.
Typical uses and indications (UK context)
In the UK, escitalopram is used for common mental health conditions such as:
- Depression (including depressive episodes)
- Generalised anxiety disorder (GAD)
Your treatment plan may also include psychological therapies (such as talking therapies) alongside medication. Many patients benefit from a combined approach, and the best plan depends on symptom severity, personal preferences, and clinical history.
When and how to take Lexapro (timing)
Lexapro is typically taken . Many people choose a consistent time each day to help remember doses. Some prefer taking it in the morning; others find evening dosing better, depending on side effects such as sleep changes or drowsiness.
Starting treatment
- Follow your clinician’s instructions.
- Give it time: early side effects can occur in the first days or weeks, while mood/anxiety improvement often takes longer.
- Do not stop suddenly: stopping abruptly can lead to withdrawal symptoms (see Safety section).
Can I take it with food?
Lexapro can usually be taken with or without food. If taking with food improves comfort or helps with nausea, that’s often a reasonable approach.
Dosing: what is commonly used
Dosing varies by condition, age, and individual response. Healthcare professionals usually start at a lower dose and adjust gradually if needed. The following ranges are provided for general information purposes.
General dose guidance (informational)
- Depression: commonly started at a low dose and increased if necessary to achieve symptom control.
- Generalised anxiety disorder (GAD): similarly started at a low dose and adjusted according to response.
Special populations:
- Elderly: may need a lower starting dose and more careful monitoring.
- Liver impairment: dose adjustments are often considered due to slower metabolism.
- Other factors: concomitant medicines, sensitivity to side effects, and clinical history can influence dosing.
Reminder: Always use the dose and schedule given to you by a healthcare professional, and do not change the dose without advice.
What to expect: onset and duration
Many patients notice the following pattern:
- First days to 1–2 weeks: side effects may appear (for example, nausea, headache, restlessness, or changes in sleep).
- After 2–4 weeks: early improvement in mood or anxiety may be noticeable.
- After several weeks: fuller benefit is often reached.
If you feel worse at the beginning, contact a healthcare professional—especially if symptoms rapidly deteriorate or you feel unsafe. Support early in treatment can improve the experience and safety.
Food interactions
Typical food interactions: Lexapro generally has no major interactions with food. However, individual tolerability can vary. If you experience nausea or an upset stomach, taking your dose with food or at a different time of day may help.
Grapefruit and other foods: There are usually no specific restrictions related to grapefruit for escitalopram, but because metabolism can involve liver enzymes and other medicines can interact, it’s still worth checking with a healthcare professional if you have concerns.
Alcohol and medicine interactions
Alcohol
Alcohol can worsen depression and anxiety symptoms and may increase the risk of side effects such as:
- increased drowsiness or dizziness
- impaired coordination and judgement
- heightened nausea or stomach upset
- sleep disruption
For these reasons, it is generally best to avoid alcohol while taking Lexapro, or at least keep it minimal and discuss any planned drinking with a healthcare professional.
Important medicine interactions
Some medicines can interact with SSRIs. Always tell your pharmacist or healthcare professional about all medicines you take, including over-the-counter products, herbal remedies, and supplements.
Common interaction categories include:
- Other antidepressants or serotonin-affecting medicines: Combining can increase the risk of serotonin-related side effects.
- MAO inhibitors (a specific class of antidepressants): This combination is generally avoided due to serious risk of serotonin syndrome.
- Linezolid and methylene blue (in certain medical settings): These can affect serotonin levels and may require special precautions.
- Triptans (migraine medicines), tramadol, and other pain medicines with serotonin effects: Risk of serotonin-related effects may increase.
- St John’s wort (Hypericum perforatum): May increase serotonin activity and is often discouraged.
- Blood thinners/antiplatelets (for example, warfarin, aspirin, clopidogrel): SSRIs can increase bleeding tendency in some people; monitoring may be needed.
- Non-steroidal anti-inflammatory drugs (NSAIDs) (for example, ibuprofen, diclofenac): May increase bleeding risk when combined.
- Medicines that affect heart rhythm or electrolyte balance: SSRIs can, rarely, be associated with changes that may matter for people with certain risk factors.
- Liver enzyme inhibitors/inducers: These can change escitalopram levels, affecting side effects or effectiveness.
This is not an exhaustive list. If you’re unsure whether a medicine is safe to combine with escitalopram, check with a pharmacist.
Safety profile: side effects and when to seek help
Like all medicines, Lexapro can cause side effects. Many are mild and temporary, especially during the first weeks. However, some effects require prompt medical attention.
Common side effects (often improve with time)
- Nausea
- Headache
- Dry mouth
- Trouble sleeping (insomnia) or sleepiness
- Increased sweating
- Tremor or restlessness
- Changes in appetite
- Sexual side effects (for example, decreased libido or delayed orgasm)
Less common but important risks
- Serotonin syndrome: more likely if combined with other serotonin-increasing medicines. Symptoms may include agitation, confusion, fever, sweating, rapid heartbeat, muscle stiffness, diarrhoea, and tremor.
- Abnormal bleeding: especially if combined with blood thinners/NSAIDs.
- Hyponatraemia (low sodium): can occur particularly in older adults or those taking certain diuretics. Symptoms may include headache, weakness, confusion, and in severe cases seizures.
- QT prolongation (heart rhythm changes): risk is generally low but may be higher with certain heart conditions, electrolyte disturbances, or interacting medicines.
- Mania/hypomania: in people with bipolar disorder or vulnerability to mood switching.
Withdrawal or discontinuation symptoms
Stopping SSRIs suddenly can lead to discontinuation symptoms (sometimes called SSRI withdrawal). These may include dizziness, “electric shock” sensations, anxiety, irritability, nausea, flu-like symptoms, and sleep disturbance. Symptoms are often time-limited but can feel distressing.
To reduce this risk, healthcare professionals usually recommend a gradual reduction plan when discontinuing.
Seek urgent advice if
- You develop symptoms suggestive of serotonin syndrome (for example, fever, agitation, muscle stiffness, severe diarrhoea).
- You have thoughts of harming yourself or feel unsafe.
- You experience significant bleeding, severe dizziness/fainting, or severe allergic symptoms (such as facial swelling or difficulty breathing).
Practical use tips for better treatment experience
- Start low and go slow (as advised): many people tolerate SSRIs better when the dose is increased gradually.
- Keep a simple diary: note mood, sleep, anxiety levels, and any side effects. This helps clinicians adjust treatment appropriately.
- Plan for the first weeks: if you experience mild nausea or restlessness, it often settles. Taking with food or adjusting the time of day can help.
- Don’t stop abruptly: if you want to discontinue, ask for a supervised tapering plan.
- Medication timing: choose a consistent time daily. If it affects sleep, consider moving the dose to the morning (discuss with your healthcare professional if unsure).
- Pair with support: talking therapies, exercise within your capacity, good sleep routines, and stress management strategies can improve outcomes.
Alternative options
Escitalopram is one option within a broader treatment landscape. Depending on your symptoms, medical history, and preferences, alternatives may include:
- Other SSRIs (for example, sertraline, citalopram, fluoxetine) – similar class, different side-effect profiles.
- Other antidepressant classes: SNRIs (such as venlafaxine or duloxetine), mirtazapine, and others.
- Psychological therapies: Cognitive behavioural therapy (CBT) and other evidence-based talking therapies.
- Supportive approaches: Lifestyle changes, sleep support, stress reduction, and community resources.
- For specific conditions: targeted therapies may be considered for panic disorder, OCD, or other anxiety-spectrum diagnoses.
If Lexapro isn’t suitable or doesn’t provide adequate benefit, your healthcare team can discuss alternatives. Switching between antidepressants should be done carefully to minimise side effects and interaction risks.
United Kingdom market and legal context
In the UK, antidepressants such as escitalopram are regulated medicines. They are supplied via healthcare pathways and are subject to pharmacy rules and appropriate clinical assessment. Medicines are dispensed by authorised pharmacies in accordance with UK regulations.
Local availability can vary by strength and formulation. UK pharmacies typically manage supply and may offer information about stock status at the point of order.
Recent guidance and clinical considerations (UK)
UK clinical practice increasingly emphasises:
- Careful initial assessment of mental health symptoms and risk factors (including self-harm risk).
- Monitoring early treatment for side effects and symptom changes, especially during the first weeks.
- Shared decision-making about choice of medication and duration of treatment.
- Gradual discontinuation where appropriate to reduce withdrawal symptoms.
- Vigilance for interactions and comorbid conditions (for example, bipolar disorder, liver disease, bleeding risk, or heart rhythm concerns).
Guidance may evolve over time. Always rely on up-to-date information from your healthcare provider or pharmacist for your specific circumstances.
Delivery, availability, and ordering information
Availability of Lexapro can depend on the formulation (for example, tablet strengths) and pharmacy stock. When ordering from an online pharmacy in the UK, you may be shown:
- Estimated delivery times based on location and courier service.
- Stock status (in-stock, limited, or backorder/dispensing delays).
- Packaging and product handling instructions.
For medication safety and quality, medicines should be stored according to the leaflet instructions (commonly at room temperature and protected from moisture). Keep out of reach of children.
Storing Lexapro
Follow the guidance in the patient information leaflet. General principles include:
- Store in a safe place away from children.
- Keep the medicine in its original packaging.
- Do not use after the expiry date on the pack.
- Return unwanted medicines to a pharmacy for safe disposal (or follow local guidance).
FAQ
1) How long does it take for Lexapro to work?
Some people notice improvements within 1–2 weeks, but full benefit often takes several weeks. If you don’t feel better after a reasonable period, discuss it with your healthcare professional rather than stopping suddenly.
2) What if I feel worse when I start?
Mild side effects or temporary worsening can occur early on. However, if symptoms become significantly worse, or you feel unsafe, seek timely advice from a healthcare professional.
3) Can I take Lexapro at night?
Yes, many people can take it in the evening if that suits them. If it causes drowsiness or insomnia, your healthcare professional may suggest adjusting the time of day. Always follow individual dosing advice.
4) Is it safe to take with food?
Typically yes—Lexapro can usually be taken with or without food. If you experience nausea, taking it with food may help.
5) Can I drink alcohol while taking Lexapro?
It’s generally best to avoid alcohol, as it can worsen mood/anxiety and may increase side effects like dizziness and sleep disruption. If you plan to drink, discuss with a pharmacist or healthcare professional first.
6) What medicines should I avoid?
Avoid combinations that can increase serotonin activity or bleeding risk unless your clinician specifically advises it. Examples of interaction categories include MAO inhibitors, certain migraine medicines, linezolid/methylene blue, St John’s wort, and blood thinners or NSAIDs. Always check with a pharmacist for your specific list of medicines.
7) Will I need to taper off if I stop?
In many cases, yes. Stopping suddenly can lead to discontinuation symptoms. A gradual reduction plan is usually recommended under medical guidance.
8) Can Lexapro affect sleep or weight?
Yes. Sleep changes and appetite/weight changes can occur. If these become troublesome, contact your healthcare professional—often dose timing or other adjustments can help.
9) Are sexual side effects possible?
Sexual side effects can occur with SSRIs, including escitalopram. If you experience them, discuss options with your healthcare professional rather than stopping on your own.
10) What should I do if I miss a dose?
If you miss a dose, take it when you remember unless it is close to the next dose. Do not take a double dose to make up for the missed tablet. If you’re unsure, ask a pharmacist for advice.
11) Who may need extra caution?
Extra caution may be needed for people with liver problems, a history of bipolar disorder, bleeding risk, significant heart rhythm issues, or those taking multiple interacting medicines. Your pharmacist can help review your medicines for safety.
12) Can Lexapro be used alongside talking therapies?
Yes. Many patients benefit from medication alongside evidence-based psychological therapies such as CBT, especially for anxiety and depression.
Summary
Lexapro (escitalopram) is an SSRI antidepressant commonly used in the UK for depression and generalised anxiety disorder. It works by increasing serotonin activity in the brain, with noticeable benefits typically developing over weeks. While many side effects are mild and temporary, it’s important to use Lexapro consistently, avoid alcohol, and check for medicine interactions. If you ever need to stop, do so gradually with guidance to reduce withdrawal symptoms.

