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Senna för förstoppning

Senokot

Senna can take 8-12 hours to have an effect. It is best taken in the evening.

If you are still constipated after taking senna for three days, make an appointment to speak with your doctor.

Eating a healthy diet, drinking plenty of water and getting regular gentle exercise can all help prevent constipation.

Överblick

  • Senna is a stimulant laxative used to treat constipation.

  • It works by encouraging bowel muscles to move stools through your body.

  • You should take senna in the evening, as it usually works within 8-12 hours.

  • Do not use senna for more than a few days.

  • Stop taking senna if you experience stomach pain, cramps, or diarrhoea.

  • See a doctor or pharmacist before use if you are pregnant, breastfeeding, or giving it to a child under 12.

  • Consult a doctor if still constipated after three days of taking senna.

About senna

Typ av medicin

A stimulant laxative

Används för

Förstoppning

Även kallad

Senokot®

Tillgänglig som

Tabletter och flytande medicin för oral användning

Constipation is a common problem. It can mean 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.

Often, increasing the amount of fibre in your diet (such as by eating more fruit, vegetables, cereals, and wholemeal bread) and drinking plenty of water each day can effectively prevent or relieve constipation.

You could be recommended senna as a laxative to help relieve constipation if you cannot increase the fibre in your diet, or if this is insufficient. Senna works by encouraging the muscles in your bowel to move stools through your body. This helps you to go to the toilet. It usually has an effect within 8-12 hours. It is available to buy without a prescription at pharmacies and other retail outlets.

Before taking senna

To make sure that this is the right treatment for you, before you start taking senna it is important that you speak with your doctor or a pharmacist if:

  • You are pregnant or breastfeeding. This is because, if you are expecting a baby or breastfeeding, medicines should only be taken on the advice of a doctor or nurse.

  • It is intended for a child under 12 years old. Laxatives should only be given to children on the advice of a doctor, or a healthcare professional experienced in the management of constipation in children.

  • You are so constipated that you think you may have a blockage.

  • You are taking or using any other medicines. This includes any medicines you are taking which are available to buy without a prescription, as well as herbal and complementary medicines.

  • You have ever had an allergic reaction to a medicine.

How to take senna

  • Before taking senna, read the manufacturer's printed information leaflet from the pack. It will give you more information about the medicine and will provide you with a full list of the side-effects which you could experience.

  • The usual adult dose is two to four 7.5 mg tablets, or two to four 5 ml spoonfuls (10-20 ml) of liquid medicine once a day. Take senna in the evening. It should only be used for a few days - this is because your bowel can start to rely on this type of laxative to make it work rather than working on its own. If you are still constipated after taking senna for three days, you should make an appointment to speak with your doctor.

  • If a doctor or healthcare professional has recommended senna for your child, check the label on the pack carefully to make sure that you give the correct dose for the age of your child.

Få ut det mesta av din behandling

  • It is important for you to drink plenty while you are constipated. Adults should aim to drink at least two litres (about 8-10 cups) of fluid per day. Most sorts of drink will do but, as a start, try just drinking a glass of water 3-4 times a day in addition to what you normally drink.

  • 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 in your diet that contain sorbitol. 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) which 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 condition leaflets called Förstoppning (for adults) and Förstoppning hos barn.

Can senna cause problems?

Along 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 senna. 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.

Side-effects of senna

Vad kan jag göra om jag upplever detta?

Stomach pain or cramp, diarrhoea

Stop taking senna

If you experience any other symptoms which you think may be due to senna, please speak with your doctor or pharmacist for further advice.

How to store senna

  • 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

Om du köper några mediciner, kontrollera med en apotekare att de är säkra att ta tillsammans med dina andra mediciner.

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.

Om du ska genomgå en operation eller tandbehandling, informera den som utför behandlingen om vilka mediciner du tar.

Do not keep out-of-date or unwanted medicines. Take them to your local pharmacy who will dispose of them for you.

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.

symptomkontroll

Osäker på att blanda mediciner?

Kontrollera möjliga interaktioner mellan läkemedel, kosttillskott och livsmedel innan du tar dem tillsammans.

Vanliga frågor

Why is senna usually taken in the evening?

Senna typically takes 8-12 hours to work. Taking it in the evening allows it to work overnight, leading to a bowel movement the following morning.

Can I take more than the recommended dose of senna if I'm still constipated?

No, you should never take more than the prescribed dose. If you are still constipated after three days of taking senna as directed, you should stop taking it and make an appointment to speak with your doctor.

What should I do if I forget to take my senna dose?

The article does not specify what to do if a dose is missed. It's best to take your next dose at the usual time and not double up to make up for a forgotten one. If you are concerned, speak to a pharmacist.

Are there any natural ways to help soften stools that can be used alongside senna?

Yes, some fruits (and their juices) contain sorbitol, a natural sugar that is not easily digested and draws water into your bowel to help soften stools. Examples include apples, apricots, gooseberries, grapes, peaches, pears, plums, prunes, raspberries, and strawberries.

How long should I expect to use senna for?

Senna should only be used for a few days. Using it for longer periods can make your bowel dependent on the laxative rather than working on its own. If constipation continues after three days, you should consult your doctor.

Vidare läsning och referenser

Om författarenVisa fullständig biografi

Författarbild

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

Författarbild

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.

  • Next review due: 25 Nov 2027
  • 12 Nov 2024 | Senaste versionen

    Senast uppdaterad av

    Michael Stewart, MRPharmS

    Granskad av

    Sid Dajani
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