Methylcellulose tablets
Granskad av Sid DajaniSenast uppdaterad av Michael Stewart, MRPharmSLast updated 5 okt 2023
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Clinical author's note Michael Stewart 02/10/2023: Celevac® tablets were discontinued in the United Kingdom in January 2021. At the time of review there are no methylcellulose products for digestive health available in the UK. Methylcellulose tablets and powders may still be available in other countries or as special order products. 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.
The usual dose is 3-6 tablets taken twice a day. Break up the tablets in your mouth before you swallow.
If you are taking methylcellulose for constipation, drink plenty of water as you take the tablets.
If you are taking methylcellulose for diarrhoea, swallow the tablets with as little water as possible.
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About methylcellulose
Typ av medicin | A bulk-forming laxative |
Används för | To manage bowel function (constipation and diarrhoea) |
Även kallad | Celevac® (UK - discontinued) |
Tillgänglig som | Tabletter |
Methylcellulose is a laxative used to regulate bowel function - it can help manage constipation or diarrhoea.
Förstoppning is a common problem. It means either going to the toilet less often than usual to empty your bowels, or passing hard or painful stools. Constipation can be caused by a number of things. Not eating enough fibre or not drinking enough fluid can cause constipation. Some conditions (such as pregnancy) can cause constipation, as can a lack of exercise or movement (such as being ill in bed) and some medicines. When taken with a glassful of water, methylcellulose tablets absorb the water and swell to a soft gel consistency in your bowel. This increases the bulk of your stools and eases constipation by encouraging your bowels to move the stools through your digestive system.
Methylcellulose tablets can also be helpful to manage diarré. When the tablets are swallowed with only a sip of water, they absorb water from the bowel. This helps prevent the loss of fluid from diarrhoea and changes the consistency of the stools making them more formed. This action helps to regulate the passage of food through the digestive systems in people with certain bowel disorders, such as irritable bowel syndrome, diverticular disease, and ulcerös kolit, and after some types of bowel surgery.
Before taking methylcellulose
Tillbaka till innehållSome 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 methylcellulose it is important that your doctor knows:
If you are pregnant or breastfeeding. Methylcellulose is not considered harmful to babies, but it is important that your doctor knows about this.
If you have any difficulty in swallowing.
If you are so constipated that you think you may have a blockage.
If you have been told you have a bowel infection.
Om du tar 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.
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How to take methylcellulose
Tillbaka till innehållBefore you start the treatment, read the manufacturer's printed information leaflet from inside the pack. It will give you more information about methylcellulose and will provide you with a full list of the side-effects which you may experience.
Take methylcellulose tablets exactly as your doctor tells you to. It is usual to take a dose of 3-6 tablets, twice a day. Your doctor will tell you what dose is right for you. Break up the tablets in your mouth before you swallow them. You should not take a dose just before bedtime.
If you are taking methylcellulose for constipation, it is important for you to drink plenty of water at the same time as you take the methylcellulose tablets. Count out the correct number of tablets for your dose and swallow these with a large glassful (about 300 ml) of water.
If you are taking methylcellulose for diarrhoea, swallow the correct number of tablets for each dose with just a sip of water. Avoid drinking anything else during the half hour before you take the tablets and during the half hour after you have taken the tablets.
If you forget to take a dose, do not worry, just take the next dose when it is due. Do not take two doses together to make up for a forgotten dose.
Få ut det mesta av din behandling
Tillbaka till innehållThe following information applies if you are taking methylcellulose tablets for förstoppning:
Sometimes it may take a few days before you feel the full benefit from a bulk-forming laxative such as methylcellulose. However, if after several days you do not feel that your symptoms are improving, or if they get any worse, you should speak with your doctor again.
Try to eat a balanced diet containing high-fibre foods such as wholemeal and wholegrain breads and cereals, fruit and vegetables, brown rice and wholemeal pasta. If you are not used to a high-fibre diet, it may be best to increase the amount of fibre you eat gradually.
Keeping your body active will help you to keep your digestive system moving, so try to take some regular daily exercise.
You may wish to include some foods that contain sorbitol in your diet. Sorbitol is a naturally occurring sugar. It is not digested very well and draws water into your bowel which has an effect of softening stools. Fruits (and their juices) that have a high sorbitol content include apples, apricots, gooseberries, grapes (and raisins), peaches, pears, plums, prunes, raspberries and strawberries.
You can read more about how to prevent or treat constipation in the separate leaflets called Förstoppning (for adults) and Förstoppning hos barn.
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Can methylcellulose cause problems?
Tillbaka till innehållAlong with their useful effects, most medicines can cause unwanted side-effects although not everyone experiences them. The table below contains some of the ones which can occur with methylcellulose. You will find a full list in the manufacturer's information leaflet supplied with your medicine. Speak with your doctor or pharmacist if any of the following continue or become troublesome.
Methylcellulose side-effects | Vad kan jag göra om jag upplever detta? |
Excess wind (flatulence), bloating, tummy (abdominal) discomfort | These effects should soon settle down as your body adjusts but, if they continue or become troublesome, speak with your doctor or pharmacist |
Om du upplever några andra symtom som du tror kan bero på tabletterna, tala med din läkare eller apotekare för vidare råd.
How to store methylcellulose
Tillbaka till innehållFörvara 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
Tillbaka till innehållViktig information om alla läkemedel
If you are due to have an operation or any dental treatment, tell the person carrying out the treatment which medicines you are taking.
If you buy any medicines, always check with a pharmacist that they are safe to take with your other medicines.
Ta aldrig mer än den föreskrivna dosen. Om du misstänker att du eller någon annan kan ha tagit en överdos av denna medicin, gå till akutmottagningen på ditt lokala sjukhus. Ta med behållaren, även om den är tom.
Denna medicin är för dig. Ge den aldrig till andra människor även om deras tillstånd verkar vara detsamma som ditt.
Behåll inte 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 website.

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Vidare läsning och referenser
- Mediciner Komplett BNF 89:e Utgåvan; Brittiska Läkarföreningen och Kungliga Farmaceutiska Sällskapet i Storbritannien, London.
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Artikelhistorik
Informationen på denna sida är skriven och granskad av kvalificerade kliniker.
Nästa granskning: 4 okt 2026
5 okt 2023 | Senaste versionen

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