Lofexidine tablets
BritLofex, Lucemyra
Granskad av Sid DajaniSenast uppdaterad av Michael Stewart, MRPharmSSenast uppdaterad 11 Feb 2025
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Klinisk författares anmärkning Michael Stewart 01/03/2022: BritLofex® tablets were discontinued in the UK in October 2018. At the time of review there are no branded or generic products containing lofexidine available in the UK. Lofexidine may still be available in other countries. This medicine leaflet is based on medical information available in the UK at the time of writing and is left here for reference purposes. Please also refer to the manufacturer's information supplied with your medicine.
It is usual to take four tablets over the first day. Your dose will then be increased over the next few days to suit your needs. A course of treatment usually lasts 7-10 days.
The main side-effects are dizziness, dry mouth and feeling sleepy.
At the end of your treatment your dose will be reduced gradually over a few days. Do not stop taking lofexidine suddenly, as this can cause your blood pressure to rise suddenly which could be harmful.
Överblick
Lofexidine is used to reduce withdrawal symptoms during opioid detoxification.
It helps to reduce effects like chills, sweating, stomach cramps, and muscle pain.
Take lofexidine exactly as your doctor tells you, usually for around 7-10 days.
Do not stop taking it suddenly, as your doctor will reduce your dose gradually.
Common side effects include feeling dizzy or sleepy, dry mouth, slow heart rate, and low blood pressure.
About lofexidine
Typ av medicin | An alpha-adrenergic agonist medicine |
Används för | Reducing withdrawal symptoms during opioid detoxification (such as heroin, morphine or dihydrocodeine detox) |
Även kallad | Lucemyra® (USA), BritLofex® (UK - discontinued) |
Tillgänglig som | Tabletter |
Lofexidine is a treatment for opioid drug dependence. Medicines for drug dependence are mainly used to reduce or prevent withdrawal symptoms while trying to break drug use.
Lofexidine is usually used alongside, but sometimes instead of, other medicines taken for opioid drug dependence such as methadone or buprenorphine. It helps to reduce withdrawal effects such as chills, sweating, stomach cramps, muscle pain, difficulties sleeping and runny nose.
Before taking lofexidine
Some medicines are not suitable for people with certain conditions, and sometimes a medicine can only be used if extra care is taken. For these reasons, before you start taking lofexidine it is important that your doctor knows:
Om du är gravid eller ammar.
If you have a heart condition, or if you have had a heart attack, or if you have a heart rhythm problem such as a slow or irregular heartbeat.
Om du har lågt blodtryck.
If you have had a stroke or 'mini-stroke' (also known as a transient ischaemic attack, or TIA).
If you are feeling depressed.
Om du har några problem med hur dina njurar fungerar.
Om du tar eller använder några andra läkemedel. Detta inkluderar alla läkemedel du tar som finns att köpa utan recept, samt växtbaserade och komplementära läkemedel.
Om du någonsin har haft en allergisk reaktion mot en medicin.
How to take lofexidine
Lofexidine is used as part of a detoxification programme. Because each programme is tailored to meet a person's individual needs and no two detoxifications are exactly the same, it is important that you take lofexidine exactly as your doctor tells you to.
Before you start the treatment, read the manufacturer's printed information leaflet from inside the pack. It will give you more information about lofexidine, and will also provide you with a full list of the side-effects which you could experience from taking it.
Your doctor or community drug-team worker will tell you when and how often to take the tablets. It is likely that you will be asked to take four tablets over the course of the first day. Take your last dose of the day at bedtime, as this will help to reduce any problems you may have sleeping. Your dose may then be increased over the next few days. The maximum number of tablets you will be prescribed to take at any one time is 4, and the maximum number of tablets during any one day is 12.
You can take lofexidine tablets either before or after meals. Swallow the tablets whole with a drink of water.
If you forget to take a dose, take it as soon as you remember and then continue as before. Do not take two doses together to make up for a missed dose.
It is usual to take lofexidine for around 7-10 days, although sometimes a course of treatment can be for longer than this. You should not stop taking lofexidine suddenly, as this can cause your blood pressure to rise quickly which could be harmful. At the end of the treatment, your doctor will ask you to reduce your dose gradually over a few days to prevent this from happening.
Få ut det mesta av din behandling
It is important that you keep your regular appointments with your doctor/clinic so that your progress can be reviewed. Your blood pressure and pulse rate will need to be regularly monitored (especially in the first few days) to make sure you are taking a dose which helps your condition but avoids unwanted symptoms.
Lofexidine will help you to deal with withdrawal symptoms but it will not help you through cravings. You are more likely to succeed in breaking your drug habit if you have support and counselling. Local drug community teams, self-help groups and other agencies can be of help. It is much harder to 'do it alone', so go for counselling and help if it is available in your area. Try to stay positive and relaxed, drink plenty of fluids, and eat a light diet.
You should not drink alcohol while you are on lofexidine because it can increase side-effects such as feeling sleepy or dizzy.
Can lofexidine cause problems?
Along with their useful effects, most medicines can cause unwanted side-effects although not everyone experiences them. The table below contains the most common ones associated with lofexidine. You will find a full list in the manufacturer's information leaflet supplied with your medicine. The unwanted effects often improve as your body adjusts to the new medicine, but speak with your doctor or pharmacist if any of the following continue or become troublesome.
Very common lofexidine side-effects (these affect more than 1 in 10 people) | Vad kan jag göra om jag upplever detta? |
Feeling dizzy or sleepy | If you feel dizzy, sit down for a while until you feel better. It is important you do not drive and do not use tools or machines while affected. Do not drink alcohol |
Dry mouth and throat | Försök tugga sockerfritt tuggummi eller suga på sockerfria karameller |
Slow heart rate, low blood pressure | Your doctor will check for this |
Om du upplever några andra symtom som du tror kan bero på medicinen, tala med din läkare eller apotekare för vidare råd.
How to store lofexidine
Förvara alla läkemedel utom räckhåll och synhåll för barn.
Förvara på en sval, torr plats, borta från direkt värme och ljus.
Viktig information om alla läkemedel
Viktig information om alla läkemedel
Never take more than the prescribed dose. If you suspect that you or someone else might have taken an overdose of this medicine go to the accident and emergency department of your local hospital. Take the container with you, even if it is empty.
Om du ska genomgå en operation eller tandbehandling, informera den som utför behandlingen om vilka mediciner du tar.
Om du köper några mediciner, kontrollera med en apotekare att de är säkra att ta tillsammans med dina andra mediciner.
Denna medicin är för dig. Ge den aldrig till andra människor även om deras tillstånd verkar vara detsamma som ditt.
Behåll aldrig föråldrade eller oönskade mediciner. Ta dem till ditt lokala apotek som kommer att ta hand om dem åt dig.
Om du har några frågor om denna medicin, fråga din apotekare.
Rapportera biverkningar av ett läkemedel eller vaccin
Om du upplever biverkningar kan du rapportera dem online via Yellow Card webbplats.

Osäker på att blanda mediciner?
Kontrollera möjliga interaktioner mellan läkemedel, kosttillskott och livsmedel innan du tar dem tillsammans.
Vanliga frågor
Can I drive or operate machinery while taking lofexidine?
Lofexidine can cause dizziness and sleepiness. If you experience these side-effects, you should not drive or use tools or machines. It's best to sit down until you feel better.
What should I do if I forget to take a dose of lofexidine?
If you miss a dose, take it as soon as you remember. After that, continue with your regular schedule. Do not take a double dose to compensate for the one you missed.
How long will I typically need to take lofexidine?
You will usually take lofexidine for about 7 to 10 days, although sometimes a course of treatment might last longer. Your doctor will advise you on the exact duration for your individual detoxification programme.
What kind of support can help me during my detoxification in addition to lofexidine?
While lofexidine helps with withdrawal symptoms, it doesn't address cravings. You are more likely to succeed by seeking support and counselling. Local drug community teams, self-help groups, and other agencies can provide assistance. It's recommended to accept counselling and help if available in your area.
What if I experience a dry mouth or throat while taking lofexidine?
If you experience a dry mouth or throat, you can try chewing sugar-free gum or sucking on sugar-free sweets to help alleviate this symptom.
Are there any specific dietary recommendations while taking lofexidine?
It is advised to maintain a light diet. Also, ensure you drink plenty of fluids to stay hydrated during your treatment.
Vidare läsning och referenser
- Mediciner Komplett BNF 89:e Utgåvan; Brittiska Läkarföreningen och Kungliga Farmaceutiska Sällskapet i Storbritannien, London.
Om författarenVisa fullständig biografi

Michael Stewart, MRPharmS
Ansvarig för granskning av medicinbroschyrer – Konsult, Apotekare
BPharm (Hons), MRPharmS
Michael är en apotekare som arbetar i Midlands och South Yorkshire med mer än 20 års erfarenhet av att ge råd om läkemedel och medicinska tillstånd. Han har en stark bakgrund inom vårdutbildning och har producerat och levererat utbildningskurser för apoteksteam och personal inom vårdboenden, inklusive sjuksköterskor. Han har också bidragit till apoteksrådgivande styrelser för hantering av mindre allvarliga tillstånd i samhället.
Om recensenten

Sid Dajani
Sultan Dajani tog examen vid London School of Pharmacy 1994 och blev den yngsta valda medlemmen i Royal Pharmaceutical Society-rådet sedan dess grundande 1842.
Artikelhistorik
Informationen på denna sida är skriven och granskad av kvalificerade kliniker.
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Nästa granskning förfaller: 11 feb 2028
11 Feb 2025 | Senaste versionen

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