Ossibato di sodio
Xyrem
Revisione paritaria di Sid DajaniUltimo aggiornamento di Michael Stewart, MRPharmSUltimo aggiornamento 26 Lug 2022
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Take sodium oxybate two times each night.
Take your first dose as you go to bed and the second dose 2½-4 hours later.
Sodium oxybate will make you feel sleepy. If you still feel sleepy the next day, do not drive and do not use tools or machines.
A colpo d'occhio
Sodium oxybate is a medicine for narcolepsy with cataplexy.
It helps with excessive daytime sleepiness and cataplexy symptoms.
You take it as an oral liquid, split into two doses at bedtime and a few hours later.
Take it at least 2-3 hours after eating, mixed with water.
Do not drive for at least six hours after taking it, and avoid alcohol.
About sodium oxybate
Tipo di medicinale | Central nervous system depressant |
Utilizzato per | Narcolepsy with cataplexy |
Chiamato anche | Xyrem® |
Disponibile come | Oral liquid medicine |
Narcolessia is a problem which affects your sleep. Disturbed night-time sleep makes you feel very tired and drowsy during the daytime, and you can also have times where you fall asleep during the day without any warning. Many people with narcolepsy also have cataplexy. Cataplexy is a condition in which you suddenly lose control over some of your muscles.
Sodium oxybate is used to treat narcolepsy when cataplexy is also a problem. It helps with excessive daytime sleepiness as well as helping the symptoms of cataplexy. It is sometimes used in combination with other medicines for narcolepsy.
Before taking sodium oxybate
Some medicines are not suitable for people with certain conditions, and sometimes a medicine may only be used if extra care is taken. For these reasons, before you start taking sodium oxybate it is important that your doctor or pharmacist knows:
Se sei incinta, stai cercando di avere un bambino o stai allattando.
Se hai l'epilessia.
If you have any problems with your heart or your breathing, or if you have high blood pressure.
If you have problems with your liver or kidneys.
If you are on a 'low sodium' diet for medical reasons.
Se hai mai avuto una malattia depressiva.
If you have porphyria, a rare inherited blood disorder.
If you have ever had a drug addiction problem.
Se stai assumendo altri medicinali. Questo include qualsiasi medicinale che stai assumendo e che è disponibile per l'acquisto senza prescrizione medica, così come i medicinali a base di erbe e complementari.
Se hai mai avuto una reazione allergica a un medicinale.
How to take sodium oxybate
Before you start this treatment, read the manufacturer's printed information leaflet from inside your pack. The leaflet will give you more information about sodium oxybate and a full list of side-effects which you may experience from taking it.
Take sodium oxybate exactly as your doctor tells you to. When starting this treatment your doctor will give you a small dose and then gradually increase it. This is to make sure you have the dose that helps your condition and avoids any unwanted symptoms.
It is taken in two doses - the first dose taken as you go to bed, and the second dose 2½-4 hours later. You should prepare both doses before you retire to bed, and you may need to set an alarm to make sure you wake up to take the second dose.
Only use the special child-resistant dosing cups provided with Xyrem® for storing your diluted doses.
Sit upright whilst taking your doses. Take your second dose whilst still in bed and lie down again straightaway.
Food interferes with how much of this medicine is absorbed by your body, so it is important that you take sodium oxybate well after eating any food. Most doctors will recommend that it is taken at a set time each evening, at least 2-3 hours after your evening meal.
Mix each of your doses with water (see below).
If you forget to take the first dose, take it as soon as you remember and then take the second dose 2½-4 hours later. If you forget to take the second dose, do not take it when you remember but instead skip the dose completely and do not take any more until the following evening. Do not take two doses together to make up for a forgotten dose.
Instructions for using Xyrem® Oral Solution
Remove the bottle cap and the foil seal. Push the plastic adaptor into the top of the open bottle.
Insert the syringe into the adapter.
Keeping the bottle upright, gently pull out the plunger of the syringe so that the solution fills the syringe to the mark which corresponds to your dose.
Remove the syringe from the bottle, and empty the liquid from the syringe into the dosing cup.
Repeat steps 2-4 to prepare your second dose.
Add 60 ml of water (about four tablespoons) to both dosing cups, and then close both of the cups with the locking caps provided.
Replace the cap on the bottle of Xyrem® Oral Solution, leaving the adapter in place. Wash the syringe with water.
Ottenere il massimo dal tuo trattamento
Keep your regular appointments with your doctor. This is so your progress can be monitored.
Treatment with sodium oxybate is usually long-term. Continue to take the medicine unless you are advised otherwise. Stopping suddenly can cause problems and your doctor may want you to reduce your dose gradually if this is necessary.
Sodium oxybate will make you sleepy, so do not drive within six hours of taking a dose. You may also continue to feel sleepy during the following day, so do not drive and do not use tools or machines if this happens, as you may put yourself and others at risk.
You should not drink alcohol while you are on sodium oxybate.
If you buy any medicines, check with a pharmacist that they are suitable for you to take with sodium oxybate. Some strong painkillers should not be taken with this medicine.
If you are having an operation or dental treatment, tell the person carrying out the treatment that you are taking this medicine.
Sodium oxybate is known to cause dependence, particularly where more than the recommended doses are taken. If you are concerned about this, you should discuss it with your doctor.
Can sodium oxybate cause problems?
Oltre ai loro effetti benefici, la maggior parte dei farmaci può causare effetti collaterali indesiderati, anche se non tutti li sperimentano. Questi di solito migliorano man mano che il tuo corpo si adatta al nuovo farmaco, ma parla con il tuo medico o farmacista se uno dei seguenti effetti collaterali persiste o diventa fastidioso.
Very common sodium oxybate side-effects - these affect more than 1 in 10 people who take this medicine | Cosa posso fare se sperimento questo? |
Sensazione di vertigini | Move around more slowly. Do not drive and do not use tools or machines until you feel better |
Sensazione di nausea | Stick to simple meals, avoid rich or spicy food |
Mal di testa | Bevi molta acqua e chiedi al farmacista di consigliare un antidolorifico adatto. Se i mal di testa persistono, informa il tuo medico |
If you experience other symptoms which you think may be due to this medicine, speak with your doctor or pharmacist.
How to store sodium oxybate
Tenere tutti i medicinali fuori dalla portata e dalla vista dei bambini.
Conservare in un luogo fresco e asciutto, lontano da fonti di calore e luce diretta.
Once a bottle has been opened it will keep for 90 days; after this time, make sure you have a fresh supply.
Diluted liquid should only be kept for 24 hours.
Informazioni importanti su tutti i medicinali
Informazioni importanti su tutti i medicinali
Non assumere mai più della dose prescritta. Se sospetti che tu o qualcun altro possa aver assunto un sovradosaggio di questo medicinale, recati immediatamente al pronto soccorso del tuo ospedale locale. Porta con te il contenitore, anche se è vuoto.
Questo medicinale è per te. Non darlo mai ad altre persone, anche se la loro condizione sembra essere la stessa della tua.
Non conservare medicinali scaduti o indesiderati. Portali alla tua farmacia locale che li smaltirà per te.
Se hai domande su questo medicinale, chiedi al tuo farmacista.
Segnala effetti collaterali di un medicinale o vaccino
Se si verificano effetti collaterali, è possibile segnalarli online tramite il Sito web Yellow Card.

Non sei sicuro di mescolare i medicinali?
Controlla le possibili interazioni tra farmaci, integratori e alimenti prima di assumerli insieme.
Domande frequenti
What is narcolepsy and how does sodium oxybate help with it?
Narcolepsy is a sleep disorder that causes disturbed night-time sleep, leading to extreme tiredness and drowsiness during the day, and sudden sleep attacks. Many people with narcolepsy also experience cataplexy, which is a sudden loss of muscle control. Sodium oxybate is used to treat narcolepsy when cataplexy is also present. It helps reduce excessive daytime sleepiness and improves the symptoms of cataplexy.
How soon after eating can I take sodium oxybate?
Food affects how much of the medicine your body absorbs, so it's important to take sodium oxybate well after eating. Most doctors recommend taking it at a set time each evening, at least 2-3 hours after your evening meal.
What should I do if I accidentally take two doses of sodium oxybate close together?
You should never take two doses together to make up for a forgotten dose. If you forget your second dose, skip it completely and do not take any more until the following evening.
Are there any strong painkillers I should avoid while taking sodium oxybate?
Yes, some strong painkillers should not be taken with sodium oxybate. If you are buying any medicines, including painkillers, you should always check with a pharmacist to ensure they are suitable to take with sodium oxybate.
How long can an opened bottle of sodium oxybate be stored?
Once a bottle of sodium oxybate has been opened, it will keep for 90 days. After this time, you should dispose of it and use a fresh supply. Diluted liquid, once prepared, should only be kept for 24 hours.
Ulteriori letture e riferimenti
- Manufacturer's PIL, Xyrem® 500 mg/ml oral solution; UCB Pharma Limited, The electronic Medicines Compendium. Dated February 2022.
- Medicinali Completi BNF 89ª Edizione; Associazione Medica Britannica e Società Farmaceutica Reale di Gran Bretagna, Londra.
Informazioni sull'autoreVisualizza il profilo completo

Michael Stewart, MRPharmS
Responsabile Revisione Foglietti Illustrativi – Contrattista, Farmacista
BPharm (Hons), MRPharmS
Michael è un farmacista comunitario che esercita nelle Midlands e nel South Yorkshire con oltre 20 anni di esperienza nel consigliare su farmaci e condizioni mediche. Ha una solida esperienza nella formazione sanitaria, avendo prodotto e tenuto corsi di formazione per team di farmacia e personale di strutture di assistenza residenziale, inclusi infermieri. Ha anche contribuito a consigli consultivi farmaceutici per la gestione di condizioni a bassa gravità nella comunità.
Informazioni sul recensore

Sid Dajani
Sultan Dajani si è laureato alla London School of Pharmacy nel 1994 ed è diventato il più giovane membro eletto del consiglio della Royal Pharmaceutical Society dalla sua fondazione nel 1842.
Storia dell'articolo
Le informazioni su questa pagina sono scritte e revisionate da clinici qualificati.
Articolo disponibile anche in Inglese, Tedesco, Spagnolo, Francese, Italiano, Portoghese, Hindi, Ebraico, Arabo, and Svedese.
Prossima revisione prevista: 24 Gen 2027
26 Lug 2022 | Ultima versione

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