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Lacosamide Macleods 50 mg film-coated tablets – patient leaflet, side effects, dosage

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

Medicine status: Prescription only (POM) Details

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

Patient leaflet - Lacosamide Macleods 50 mg film-coated tablets

1. What Lacosamide Macleods is and what it is used for

What Lacosamide Macleods is

Lacosamide Macleods contains lacosamide. This belongs to a group of medicines called “antiepileptic medicines”.

These medicines are used to treat epilepsy. Ÿ You have been given this medicine to lower the

number of fits (seizures) you have.

What Lacosamide Macleods is used for

Ÿ Lacosamide Macleods is used:

Ÿ on its own and in association with other

antiepileptic medicines in adults, adolescents and children aged 2 years and older to treat a certain type of epilepsy characterised by the occurrence of partial-onset seizure with or without secondary generalisation. In this type of epilepsy, fits first affect only one side of

your brain. However, these may then spread to larger areas on both sides of your brain;

Ÿ in association with other

antiepileptic medicines in adults, adolescents and children aged 4 years and older to treat primary generalised tonic- clonic seizures (major fits, including loss of consciousness) in patients with idiopathic generalised epilepsy (the type of epilepsy that is thought to have a genetic cause).

2. What you need to know before you take Lacosamide Macleods

Do not take Lacosamide Macleods

Ÿ if you are allergic to lacosamide, or any of the

other ingredients of this medicine (listed in section 6). If you are not sure whether you are allergic, please discuss with your doctor.

Ÿ if you have a certain type of heart beat problem

called second- or third-degree AV block.

Do not take Lacosamide Macleods if any of the above applies to you. If you are not sure, talk to your doctor or pharmacist before taking this medicine.

Warnings and precautions

Talk to your doctor before taking Lacosamide Macleods if:

Ÿ you have thoughts of harming or killing yourself. A

small number of people being treated with antiepileptic medicinal products such as lacosamide have had thoughts of harming or killing themselves. If you have any of these thoughts at any time, tell your doctor straight away.

Ÿ you have a heart problem that affects the beat of

your heart and you often have a particulary slow, fast or irregular heart beat (such as AV block, atrial fibrillation and atrial flutter).

Ÿ you have severe heart disease such as heart failure

or have had a heart attack.

Ÿ you are often dizzy or fall over. Lacosamide

Macleods may make you dizzy - this could increase the risk of accidental injury or a fall. This means that you should take care until you are used to the effects of this medicine.

If any of the above apply to you (or you are not sure), talk to your doctor or pharmacist before taking Lacosamide Macleods.

If you are taking Lacosamide Macleods, talk to your doctor if you are experiencing a new type of seizure or worsening of existing seizures

If you are taking Lacosamide Macleods and you are experiencing symptoms of abnormal heartbeat (such as slow, rapid or irregular heartbeat, palpitations, shortness of breath, feeling lightheaded, fainting), seek medical advice immediately (see section 4).

Children

Lacosamide Macleods is not recommended for children aged under 2 years with epilepsy characterised by the occurrence of partial-onset seizure

Always take this medicine exactly

as your doctor or pharmacist has told you. Check with your doctor or pharmacist if you are not sure. Other form(s) of this medicine may be more suitable for children; ask your doctor or pharmacist.

Taking Lacosamide Macleods

Ÿ Take Lacosamide Macleods twice each day - approximately 12 hours apart.

Ÿ Try to take it at about the same time each day. Ÿ Swallow the Lacosamide Macleods tablet with a glass of water.

Ÿ You may take Lacosamide Macleods with or without food.

You will usually start by taking a low dose each day and your doctor will slowly increase this over a number of weeks. When you reach the dose that works for you, this is called the “maintenance dose”, you then take the same amount each day. Lacosamide Macleods is used as a long term treatment. You should continue to take Lacosamide Macleods until your doctor tells you to stop.

How much to take

Listed below are the normal recommended doses of Lacosamide Macleods for different age groups and weights.

Your doctor may prescribe a different dose if you have problems with your kidneys or with your liver.

Adolescents and children weighing 50 kg or more and adults

When you take Lacosamide Macleods on its own

  • The usual starting dose of Lacosamide Macleods is

    50 mg twice a day.

  • Your doctor may also prescribe a starting dose of

    100 mg of Lacosamide Macleods twice a day.

  • Your doctor may increase your twice daily dose every week by 50 mg. This will be until you reach a maintenance dose between 100 mg and 300 mg twice a day.

When you take Lacosamide Macleods with other antiepileptic medicines

The usual starting dose of Lacosamide Macleods is 50 mg twice a day.

Your doctor may increase your twice daily dose every week by 50 mg. This will be until you reach a maintenance dose between 100 mg and 200 mg twice a day.

If you weigh 50 kg or more, your doctor may decide to start Lacosamide Macleods treatment with a single “loading” dose of 200 mg. You would then start your ongoing maintenance dose 12 hours later. and not recommended for children aged under 4 years with primary generalised tonic-clonic seizures. This is because we do not yet know whether it will work and whether it is safe for children in this age group.

Other medicines and Lacosamide Macleods

Tell your doctor or pharmacist if you are taking, have recently taken or might take any other medicines.

In particular, tell your doctor or pharmacist if you are taking any of the following medicines that affect your heart - this is because Lacosamide Macleods can also affect your heart:

Ÿ medicines to treat heart problems;

Ÿ medicines which can increase the “PR interval” on a scan of the heart (ECG or electrocardiogram) such as medicines for epilepsy or pain called carbamazepine, lamotrigine or pregabalin; Ÿ medicines used to treat certain types of irregular heart beat or heart failure.

If any of the above apply to you (or you are not sure), talk to your doctor or pharmacist before taking Lacosamide Macleods.

Also tell your doctor or pharmacist if you are taking any of the following medicines - this is because they may increase or decrease the effect of Lacosamide Macleods on your body:

Ÿ medicines for fungal infections such as

fluconazole, itraconazole or ketoconazole; Ÿ a medicines for HIV such as ritonavir; Ÿ medicines used to treat bacterial infections such as clarithromycin or rifampicin;

3. How to take Lacosamide Macleods

Driving and using machines

Do not drive, cycle or use any tools or machines until you know how this medicine

affects you. This is because

Lacosamide Macleods may make

you feel dizzy or cause blurred

vision.

If you are pregnant or breast-feeding, think you may be pregnant or planning to have a baby, ask your doctor or pharmacist for advice before taking this medicine.

Do not stop treatment without talking to your doctor first as this could increase your fits (seizures). A worsening of your disease can also harm your baby. It is not recommended to take Lacosamide Macleods if you are pregnant, as the effects of Lacosamide Macleods on pregnancy and the unborn baby are not known. It is not recommended to breast-feed your baby while taking Lacosamide Macleods, as Lacosamide Macleods passes into breast milk. Seek advice immediately from your doctor if you get pregnant or are planning to become pregnant. They will help you decide if you should take Lacosamide Macleods or not.

Ÿ a herbal medicine used to treat mild anxiety and depression called St. John's wort.

If any of the above apply to you (or you are not sure), talk to your doctor or pharmacist before taking Lacosamide Macleods.

Lacosamide Macleods with alcohol

As a safety precaution do not take Lacosamide Macleods with alcohol.

Pregnancy and breast-feeding

Fertile women should discuss the use of contraceptives with the doctor.

Children and adolescent weighing less than 50 kg

  • In the treatment of partial-

    onset seizure: Observe that Lacosamide Macleods is not recommended for children under 2 years of age.

  • In the treatment of primary generalised tonic-clonic seizures: Observe that Lacosamide Macleods is not recommended for children under 4 years of age.

The dose depends on their body weight. They usually start treatment with the syrup and only change to tablets if they are able to take tablets and get the correct dose with the different tablet strengths. The doctor will prescribe the formulation that is best suited to them.

If you take more Lacosamide Macleods than you should

If you have taken more Lacosamide Macleods than you should, contact your doctor immediately. Do not try to drive.

You may experience:

Ÿ dizziness;

Ÿ feeling sick (nausea) or being sick (vomiting); Ÿ fits (seizures), heart beat problems such a slow,

fast or irregular heart beat, coma or a fall in blood pressure with rapid heartbeat and sweating.

If you forget to take Lacosamide Macleods

Ÿ If you have missed a dose within the first 6 hours

of the scheduled dose, take it as soon as you remember.

Ÿ If you have missed a dose beyond the first 6 hours

of the scheduled dose, do not take the missed tablet anymore. Instead take Lacosamide Macleods at the next time that you would normally take it. Ÿ Do not take a double dose to make up for a

forgotten dose.

If you stop taking Lacosamide Macleods

Ÿ Do not stop taking Lacosamide Macleods without

talking to your doctor, as your epilepsy may come back again or become worse.

Ÿ If your doctor decides to stop your treatment with

Lacosamide Macleods, they will tell you how to decrease the dose step by step.

If you have any further questions on the use of this medicine, ask your doctor or pharmacist.

4. Possible side effects

Like all medicines, this medicine can cause side effects, although not everybody gets them.

Nervous system side effects such as dizziness may be

higher after a single “loading” dose.

Talk to your doctor or pharmacist if you get any of the following:

Very common: may affect more than 1 in 10 people

Ÿ Headache;

Ÿ Feeling dizzy or sick (nausea);

Ÿ Double vision (diplopia).

Common: may affect up to 1 in 10 people Ÿ Short jerks of a muscle or group of muscles

(myoclonic seizures);

Ÿ Difficulties in coordinating your movements or

walking;

Ÿ Problems in keeping your balance, shaking

(tremor), tingling (paresthesia) or muscle spasms, falling easily and getting bruises;

Ÿ Troubles with your memory, thinking or finding

words, confusion;

Ÿ Rapid and uncontrollable movements of the eyes

(nystagmus), blurred vision;

Ÿ A spinning sensation (vertigo), feeling drunk; Ÿ Being sick (vomiting), dry mouth, constipation,

indigestion, excessive gas in the stomach or bowel, diarrhoea;

Ÿ Decreased feeling or sensitivity, difficulty in

articulating words, disturbance in attention; Ÿ Noise in the ear such as buzzing, ringing or

whistling;

Ÿ Irritability, trouble sleeping, depression; Ÿ Sleepiness, tiredness or weakness (asthenia); Ÿ Itching, rash.

Uncommon: may affect up to 1 in 100 people Ÿ Slow heart rate, palpitations, irregular pulse or

other changes in the electrical activity of your heart (conduction disorder);

Ÿ Exaggerated feeling of wellbeing, seeing and/or

hearing things which are not there;

Ÿ Allergic reaction to medicine intake, hives; Ÿ Blood tests may show abnormal liver function,

liver injury;

Ÿ Thoughts of harming or killing yourself or

attempting suicide: tell your doctor straight away; Ÿ Feeling angry or agitated;

Ÿ Abnormal thinking or losing touch with reality; Ÿ Serious allergic reaction which causes swelling of

the face, throat, hand, feet, ankles, or lower legs; Ÿ Fainting;

Ÿ Abnormal involuntary movements (dyskinesia).

Not known: frequency cannot be estimated from available data

Ÿ Abnormal rapid heartbeat (ventricular

tachyarrhythmia);

Ÿ A sore throat, high temperature and getting more

infections than usual. Blood tests may show a severe decrease in a specific class of white blood cells (agranulocytosis);

Ÿ A serious skin reaction which may include a high

temperature and other flu-like symptoms, a rash on the face, extended rash, swollen glands (enlarged lymph nodes). Blood tests may show increased levels of liver enzymes and a type of white blood cell (eosinophilia);

Ÿ A widespread rash with blisters and peeling skin,

particularly around the mouth, nose, eyes and genitals (Stevens–Johnson syndrome), and a more severe form causing skin peeling in more than 30 % of the body surface (toxic epidermal necrolysis);

Ÿ Convulsion.

Additional side effects in children

The additional side effects in children were fever (pyrexia), runny nose (nasopharyngitis), sore throat (pharyngitis), eating less than usual (decreased appetite), changes in behaviour, not acting like themselves (abnormal behavior) and lacking in energy (lethargy). Feeling sleepy (somnolence) is a very common side effect in children and may affect more than 1 in 10 children.

Reporting of side effects

If you get any side effects, talk to your doctor or pharmacist. This includes any possible side effects not listed in this leaflet. You can also report side effects directly via 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 Lacosamide Macleods

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 carton and blister after EXP. The expiry date refers to the last day of that month.

Do not store above 30 °C.

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 Lacosamide Macleods contains

Ÿ The active substance is lacosamide.

One tablet of Lacosamide Macleods 50 mg contains 50 mg lacosamide.

One tablet of Lacosamide Macleods 100 mg contains 100 mg lacosamide.

One tablet of Lacosamide Macleods 150 mg contains 150 mg lacosamide.

One tablet of Lacosamide Macleods 200 mg contains 200 mg lacosamide.

Ÿ The other ingredients are:

Tablet core: microcrystalline cellulose (101), microcrystalline cellulose (102), , crospovidone type A, colloidal silicon dioxide, low substituted hydroxypropylcellulose, hydroxypropylcellulose, magnesium stearate.

Film-coat:

50 mg:

hypromellose 6mPas (E464), hypromellose 15mPas (E464), titanium dioxide (E171),

talc (E553b), polyvinyl alcohol

(E1203), polyethylene glycol 3350

(E1521), lecithin (E322), red iron

oxide (E172), black iron oxide

(E172).

100 mg:

hypromellose 6mPas (E464),

hypromellose 15mPas (E464),

titanium dioxide (E171), talc (E553b), polyvinyl alcohol (E1203), polyethylene glycol 3350 (E1521), lecithin (E322), yellow iron oxide (E172).

150 mg:

hypromellose 6mPas (E464), hypromellose 15mPas (E464), titanium dioxide (E171), talc (E553b), polyvinyl alcohol (E1203), polyethylene glycol 3350 (E1521), lecithin (E322), red iron oxide (E172), yellow iron oxide (E172), black iron oxide (E172).

200 mg:

hypromellose 6mPas (E464), hypromellose 15mPas (E464), titanium dioxide (E171), talc (E553b), polyvinyl alcohol (E1203), polyethylene glycol 3350 (E1521), lecithin (E322), indigo carmine aluminium lake (E132).

What Lacosamide Macleods looks like and contents of the pack

Ÿ Lacosamide Macleods 50 mg are pink coloured, biconvex, oval shaped, film coated tablets debossed with “L50” on one side and plain on other side.

Ÿ Lacosamide Macleods 100 mg are yellow coloured, biconvex, oval shaped, film coated tablets debossed with “L100” on one side and plain on other side.

Ÿ Lacosamide Macleods 150 mg are salmon coloured, biconvex, oval shaped, film coated tablets debossed with “L150” on one side and plain on other side.

Ÿ Lacosamide Macleods 200 mg are blue coloured, biconvex, oval shaped, film coated tablets debossed with “L200” on one side and plain on other side.

Lacosamide Macleods is available in packs of 14, 28, 56, 98 and 168 film-coated tablets in aluminium blister pack.

Not all pack sizes may be marketed.

Marketing Authorisation Holder & Manufacturer

Marketing Authorisation Holder and Manufacturer

Macleods Pharma UK Limited

Wynyard Park House,

Wynyard Avenue, Wynyard,

Billingham, TS22 5TB, United Kingdom

PL 34771/0246-0249

This leaflet was last revised in {03/2023}.

About this document

Source: MHRA - Medicines and Healthcare products Regulatory Agency (products.mhra.gov.uk) · Marketing authorisation: PL 34771/0246

Last revision stated in the text: March 2023 · 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 Lacosamide Macleods 50 mg film-coated tablets

Prescription needed? Yes, prescription-only medicine (POM)
Active substance Lacosamide
Strength 50 mg
Pharmaceutical form Oral tablet
How is it taken Oral
Pack sizes 14 tablet
Is it available? Listed as available (NHS Dictionary of Medicines and Devices – not a record of current supplies)
Drug group (ATC)
  1. N Nervous system drugs
    1. N03 Antiepileptics
      1. N03A Antiepileptics
        1. N03AX Other antiepileptics
          1. N03AX18 lacosamide
Marketing authorisation PL 34771/0246
Codes GTIN 8901463170953 · BNF 04080100

Sources: the MHRA product information (products.mhra.gov.uk) and the NHS Dictionary of Medicines and Devices (dm+d), release 10.2.0 of 19 October 2026, NHS Business Services Authority. Contains public sector information licensed under the Open Government Licence v3.0.