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Lorazepam 0.5 mg tablets – patient leaflet, side effects, dosage

Last updated: · Text from the MHRA, as of · About this document

Medicine status: Prescription only (POM) Controlled drug (Schedule 4) Details

Medicine strength:
0.5 mg
Contains active substance:
ATC code:

Patient leaflet - Lorazepam 0.5 mg tablets

1. What Lorazepam tablets are and what they are used for

The name of your medicine is Lorazepam Tablets. Lorazepam is a member of a group of medicines called benzodiazepines. It can help to relieve anxiety. Lorazepam is prescribed as short-term therapy for anxiety (2-4 weeks), or sleeping difficulties due to anxiety. It may also be used as a sedative before surgery or operative dental treatment.

Lorazepam Tablets are not to be used for longer than 4 weeks, to treat mild or moderate anxiety in adults or for anxiety/insomnia in children.

2. What you need to know before you take Lorazepam tablets

Do not take Lorazepam Tablets:

  • if you have severe breathing or chest

    problems

  • if you are allergic to benzodiazepines or

    any of the other ingredients in Lorazepam Tablets (see list under ‘What Lorazepam Tablets contain)

  • if you have myasthenia gravis (very weak or

    tired muscles)

  • if you have serious liver problems
  • if you suffer from sleep apnoea (breathing

    problems when you are asleep)

  • if you are breast-feeding, since the drug

    may pass into breast milk.

  • if you are planning a pregnancy or are

    pregnant.

If you have been only prescribed Lorazepam Tablets for anxiety and no other medications, please consult with your doctor whether other medications should also be prescribed.

Warnings and precautions

Talk to your doctor or pharmacist before using Lorazepam Tablets:

  • if you abuse or have in the past abused

    drugs or alcohol

  • if you have a personality disorder. If so,

    you have a greater chance of becoming dependent on lorazepam

  • if you have any kidney or liver problems
  • if you are suffering from depression, since

    lorazepam may increase any suicidal feelings which you may have

  • if you have suffered from depression before,

    since it could re-occur during treatment with lorazepam

  • if you suffer from breathing problems
  • if you are suffering from an eye problem

    called glaucoma e.g. high pressure within the eye.

  • Lorazepam may cause muscle relaxation

    and caution is advised as you may be at a greater risk of falling (see section 4).

Other medicines and Lorazepam

Tell your doctor or pharmacist that you are taking lorazepam before taking any other medicine or if you enter hospital for treatment, or if you are taking any other medicines, including those which have not been prescribed by a doctor, since they may affect the way Lorazepam Tablets work.

Lorazepam Tablets may also affect the way other drugs work. In particular, you should tell your doctor if you are taking any other sedative (e.g. barbiturates or antihistamines), anti-anxiety drugs, anti-depressants, strong pain killers (e.g. methadone), drugs for epilepsy (e.g. phenobarbital or valproate), antihistamines, or drugs for mood or mental disorders (e.g. chlorpromazine, loxapine or clozapine), drugs for cataplexy; treating HIV; to treat delusions or hallucinations; to help with indigestion (e.g. omeprazole); muscle relaxants (e.g. baclofen and tizanidine); drugs for addiction treatment (e.g. lofexidine and disulfiram); TB drugs such as isoniazid; antibiotics such as erythromycin; drugs to treat high blood pressure; Parkinson’s

disease drugs e.g. levodopa; oestrogen-containing contraceptives and drugs for asthma (theophylline). The dose of these drugs may need to be reduced before you can take lorazepam.

Concomitant use of this product and opioids (strong pain killers, medicines for substitution therapy and some cough medicines) increases the risk of drowsiness, difficulties in breathing (respiratory depression), coma and may be life-threatening.

Because of this, concomitant use should only be considered when other treatment options are not possible.

However, if your doctor does prescribe this product together with opioids the dose and duration of concomitant treatment should be limited by your doctor.

Please tell your doctor about all opioid medicines you are taking, and follow your Doctor’s dose recommendation closely. It could be helpful to inform friends or relatives to be aware of the signs and symptoms stated above. Contact your doctor when experiencing such symptoms.

Lorazepam with food or drink

Grapefruit juice and drinks containing caffeine should be avoided as they can affect the way that Lorazepam work.

Pregnancy and breast-feeding and fertility

Do not take this medicine if you are pregnant, or might become pregnant, without consulting your doctor. Benzodiazepines, including lorazepam, may cause damage to the foetus if taken during early pregnancy.

If you take this medicine during late pregnancy or during labour, your baby, when born, may be less active than other babies, have a low body temperature, be floppy, or have breathing or feeding difficulties for a while. Your baby’s response to the cold might be temporarily impaired. If this medicine is taken regularly in late pregnancy, your baby may develop withdrawal symptoms after birth.

Do not take this medicine if you are breast-feeding, since the drug may pass into breast milk, and cause the baby to be less active and unable to suckle.

Driving and using machines

Lorazepam may make you feel dizzy, sleepy or forgetful during the day, or may affect your concentration. This may affect your performance at skilled tasks such as driving machinery or operating machinery by affecting your vision or muscle function. You should not take part in any other activities where this could put yourself or others at risk.

You should avoid alcohol while you are taking lorazepam, since this may make you very drowsy and seriously affect your ability to drive or use machines.

The medicine can affect your ability to drive as it may make you feel sleepy or dizzy.

  • Do not drive while taking this medicine until you know how it affects you.
  • It is an offence to drive if this medicine affects your ability to drive.
  • However, you would not be committing an offence if:

The medicine has been prescribed to treat a medical or dental problem and

  • You have taken it according to the

    instructions given by the prescriber or in the information provided with the medicine and

  • It was not affecting your ability to drive safely.

Talk to your doctor or pharmacist if you are not sure whether it is safe for you to drive while taking this medicine.

Lorazepam Tablet contains lactose

If you have been told by your doctor that you have an intolerance to some sugars, contact your doctor before taking this medicinal product.

3. How To Take Lorazepam tablets

Always take Lorazepam Tablets exactly as your doctor has told you. The label on your medicine should also tell you. You should check with your doctor or pharmacist if you are not sure. Lorazepam Tablets should be swallowed with water.

Adults (and children over 13 years of age)

  • Anxiety: 1 to 4 mg daily in divided doses.

    Your doctor will tell you how often to take your tablets.

  • Sleeping Problems: 1 to 2 mg before going to sleep. You should make sure that you will be able to sleep for 7 to 8 hours before taking your tablets.
  • Before Surgery: 2 to 3 mg the night before your operation and 2 to 4 mg 1 or 2 hours before your operation.

Children (between 5 and 13 years of age)

  • Before Surgery: The dose is usually between 0.5 and 2.5 mg (depending on your child’s weight) at least 1 hour before your child’s operation.
  • Lorazepam is not recommended for the treatment of anxiety or sleeping problems in children. Nor is it recommended for children below 5 years of age.

Method of administration

Lorazepam tablet is for oral use.

Swallow the tablets whole with some liquid (e.g., with half to one glass of water). The score line allows you to break the tablet if you have difficulty swallowing it whole.

The tablet can be divided into equal doses.

Elderly or patients with liver or kidney problems

  • Older patients may be given lower

    doses. They may respond to half the usual adult dose or less.

PACKAGE LEAFLET: INFORMATION

FOR THE USER

Lorazepam 0.5 mg tablets Lorazepam 1 mg tablets Lorazepam 2.5 mg tablets

Lorazepam

Version: 07

Date & Time: 25.06.2026 & 6:10 pm Submission Code: N22123_u15f

Lorazepam is usually prescribed for short courses of treatment, lasting from a few days to 4 weeks including a dose reduction at the end. This reduces the risk of becoming dependent on Lorazepam Tablets, or suffering unpleasant effects when you stop taking them. (See ‘If you stop taking Lorazepam Tablets’ section).

The beneficial effect of Lorazepam Tablets may be less apparent after several weeks of use. If you are given lorazepam for more than 4 weeks, your doctor might want to take blood samples occasionally to check your blood and liver, since drugs like lorazepam have occasionally affected blood and liver function.

If you take more Lorazepam Tablets than you should

If anyone has taken an overdose of Lorazepam Tablets (that is more than the doctor has prescribed), seek medical help immediately, either by calling your doctor, or going to the nearest casualty department. Always take the labelled medicine container with you, even if there are no tablets left.

If you forget to take Lorazepam Tablets

Do not take a double dose to make up for a forgotten tablet. If you forget to take a tablet for anxiety, you should take it as soon as you remember if it is less than 3 hours since your usual time. If more than 3 hours has passed from when you usually take your tablet, just take your next tablet when it is due.

If you forget to take a tablet for sleeping problems, only take it if you will be able to sleep for 7 to 8 hours afterwards.

If you stop taking Lorazepam Tablets

  • After you have finished your prescribed

    treatment with lorazepam, your doctor will decide if you need further treatment.

  • The number of Lorazepam Tablets and

    how often you take them should always be reduced slowly before stopping them. This allows your body to get used to being without your tablets, and reduces the risk of unpleasant effects when you stop taking them. Your doctor will tell you how to do this.

  • On stopping lorazepam, you may

    experience symptoms such as headaches, muscle pain, anxiety, tension, depression, restlessness, sweating, confusion or irritability.

Your original sleeplessness may also return. If you suffer from any of these symptoms, ask your doctor for advice.

  • Do not stop taking your tablets suddenly.

    This could lead to more serious symptoms such as loss of the sense of reality, feeling unreal or detached from life, and unable to feel emotion. Some patients have also experienced numbness or tingling of the arms or legs, tinnitus (ringing sounds in the ears), oversensitivity to light, sound and touch, uncontrolled or overactive movements, twitching, shaking, feeling sick, being sick, stomach upsets or stomach pain, loss of appetite, agitation, abnormally fast heartbeats, panic attacks, dizziness or feeling that you are about to fall, memory loss, hallucinations, feeling stiff and unable to move easily, feeling very warm, convulsions (sudden uncontrolled shaking or jerking of the body).

  • Patients taking anti-depressants and

    patients with seizure disorders may be more likely to experience convulsions.

If you suffer from any of these symptoms, ask your doctor for advice immediately.

4. Possible side effects

Like all medicines, Lorazepam Tablets can cause side-effects, although not everybody gets them.

If you experience any of the following serious unwanted effects, you should tell your doctor immediately (these effects are more likely to occur in children and elderly patients):

Restlessness, agitation, irritability,

aggressiveness, violent anger, sleeping difficulties, nightmares, hallucinations, personality changes, sexual arousal, abnormal behaviour or false beliefs.

Unexplained bleeding and/or bruising; increased risk of infections e.g. frequent sore throats, mouth ulcers, weakness and pale skin as these are symptoms of blood dyscrasia.

Impaired consciousness (e.g. reduced alertness, confusion, disorientation, fainting) as this may ultimately lead to coma.

Thoughts of harming or killing yourself, becoming dependent on Lorazepam.

Severe allergic reactions e.g. difficulty in breathing, swelling of the lips, mouth, tongue, throat, hands, feet and /or severe faintness or dizziness.

Jaundice e.g. yellowing of the skin, eyes, nose, mouth, pale coloured stools (faeces) and dark coloured urine.

Other side effects

Very common (may affect more than 1 in 10 people):

Daytime drowsiness.

Common (may affect around 1 in 100 people):

Dizziness, poor muscle control, muscle weakness, fatigue.

Rare (may affect around 1 in 1,000 people):

Depression, numbed emotions, difficulty controlling urges and impulses to speak, act or show emotions, a feeling of well-being for no reason, appetite changes, sleep problems, changes in sex drive, decreased orgasm, headache, slurred speech, memory loss or forgetfulness, problems with vision including double vision or blurred vision, worsening of sleep apnoea (e.g. loud snoring, restlessness and choking/gasping during the night), breathing difficulties, stomach upsets, nausea, constipation, changes in the amount of saliva in the mouth, skin problems such as rashes and inflammation, erectile dysfunction, blood or liver function changes, low blood pressure or low body temperature.

Very rare (may affect around 1 in 10,000 people):

Trembling or shaking.

Not known (frequency cannot be estimated from the available data:

Increased risk of falling.

Reporting of side effects

If you get any side effects, talk to your doctor, pharmacist or nurse. This includes any possible side effects not listed in this leaflet. You can also report side effects directly via the Yellow Card Scheme at: www.mhra.gov.uk/yellowcard or search for ‘MHRA Yellow Card’ in the Google Play or Apple App Store.

By reporting side effects you can help provide more information on the safety of this medicine.

5. How to store Lorazepam tablets

Keep this medicine out of the sight and reach of children.

Do not use this medicine after the expiry date which is stated on the packaging after EXP. The expiry date refers to the last day of that month.

Store below 30°C

Keep blisters in the outer carton to protect from light.

Do not throw away any medicines via wastewater or household waste. Ask your pharmacist how to throw away medicines you no longer use. These measures will help protect the environment.

6. Contents of the pack and other information

What Lorazepam Tablets Contains

  • The active substance is lorazepam. Each Lorazepam 0.5 mg tablet contains 0.5 mg lorazepam.

    Each Lorazepam 1 mg tablet contains 1 mg lorazepam.

    Each Lorazepam 2.5 mg tablet contains 2.5 mg lorazepam.

  • The other ingredients are:

    Cellulose Microcrystalline (Grade 101

    & 102), lactose monohydrate, polacrilin potassium, magnesium stearate.

What Lorazepam tablets looks like and contents of the pack

Lorazepam 0.5 mg tablets

White to off white, circular, approximately 5mm, flat face beveled edged uncoated tablets debossed with ‘0.5’ on one side and ‘L’ on other side.

Lorazepam 1 mg tablets

White to off white, circular, approximately 6.5mm, flat face beveled edged uncoated tablets debossed with ‘L’ and ‘1’ separated by break line on one side and plain on other side. The tablets can be divided into equal doses.

Lorazepam 2.5 mg tablets

White to off white, circular, approximately 9mm, flat face beveled edged uncoated tablets debossed with 'L' and ‘2.5’ separated by break line on one side and plain on other side. The tablets can be divided into equal doses.

Pack sizes:

Blister packs: 20, 25, 28,30, 40, 50, 60 tablets.

Not all pack sizes may be marketed.

Marketing Authorisation Holder:

Milpharm Limited, Ares Block,

Odyssey Business Park,

West End Road, Ruislip,

HA4 6QD, United Kingdom

Manufacturer:

APL Swift Services (Malta) Ltd

HF26, Hal Far Industrial Estate, Hal Far, Birzebbugia, BBG 3000, Malta.

Or

Generis Farmaceutica, S.A.,

Rua Joao De Deus, N 19, Venda Nova, Amadora, 2700-487, Portugal.

Or

Milpharm Limited, Ares Block,

Odyssey Business Park,

West End Road, Ruislip,

HA4 6QD, United Kingdom

This leaflet was last revised in 06/2026.

About this document

Source: MHRA - Medicines and Healthcare products Regulatory Agency (products.mhra.gov.uk) · Marketing authorisation: PL 16363/0863

Last revision stated in the text: June 2026 · MHRA data as of 13 October 2026

Found a mistake? Tell us on the contact page.

The information on this site does not replace the advice of a doctor or pharmacist.

Facts about Lorazepam 0.5 mg tablets

Prescription needed? Yes, prescription-only medicine (POM)
Controlled drug
Yes, Schedule 4 of the Misuse of Drugs Regulations?
  • Controlled drugs are medicines that UK law controls more strictly because they can be misused or cause dependence. The Misuse of Drugs Regulations 2001 divide them into 5 schedules: schedule 1 has the strictest rules, schedule 5 the lightest.
  • Schedule 4 has lighter rules. Its part I covers benzodiazepines and similar sleeping tablets, for example diazepam or zopiclone.
  • A prescription is valid for 28 days and usually covers up to 30 days of treatment.
  • Travelling abroad: you can usually carry up to 3 months' supply. Take your prescription or a letter from your doctor to show it is yours, and check the rules of the country you are going to (GOV.UK).
  • Never give it to anyone else.
Active substance Lorazepam
Strength 0.5 mg
Pharmaceutical form Oral tablet
White to off white, circular, approximately 5 mm, flat face beveled edged uncoated tablets debossed with ‘0.5’ on one side and ‘L’ on other side.
How is it taken Oral
Excipients Cellulose Microcrystalline (Grade 101 & 102) Lactose monohydrate, Polacrilin Potassium, Magnesium stearate
Is it available? Listed as available (NHS Dictionary of Medicines and Devices – not a record of current supplies)
Shelf life 2 years
Storage Store below 30°C.
For Blister pack: Keep blisters in the outer carton to protect from light.
Drug group (ATC) Nervous system; psycholeptics; anxiolytics; benzodiazepine derivatives
  1. N Nervous system drugs
    1. N05 Psycholeptics
      1. N05B Anxiolytics
        1. N05BA Benzodiazepine derivative anxiolytics
          1. N05BA06 lorazepam
Marketing authorisation PL 16363/0863 (first authorised 1 July 2026)
Marketing authorisation holder Milpharm Limited
Codes BNF 04010200

Sources: the MHRA product information (products.mhra.gov.uk) and the NHS Dictionary of Medicines and Devices (dm+d), release 10.1.0 of 12 October 2026, NHS Business Services Authority. Contains public sector information licensed under the Open Government Licence v3.0.