Tolbutamid
Granskad av Sid DajaniSenast uppdaterad av Michael Stewart, MRPharmSSenast uppdaterad 7 Nov 2022
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Take tolbutamide tablets with food.
Remember to follow any advice you have been given about what you should or shouldn't eat, and try to take some regular exercise.
Side-effects are rare, but make sure you know how to recognise the symptoms of low blood sugar (glucose). These include feeling shaky or anxious, sweating, looking pale, feeling hungry, having a feeling that your heart is pounding (palpitations), and feeling dizzy.
Överblick
Tolbutamide is a sulfonylurea medicine for type 2 diabetes, taken as tablets.
It helps control blood sugar by increasing insulin production from your pancreas.
Take your tablets exactly as prescribed, usually with food.
Watch for signs of low blood sugar (hypoglycaemia) and know how to treat it.
Tell your doctor if you experience increased thirst or frequent urination.
About tolbutamide
Typ av medicin | A sulfonylurea antidiabetic medicine |
Används för | Type 2 diabetes mellitus |
Tillgänglig som | Tabletter |
Insulin is a hormone which is made naturally in your body, in the pancreas. It helps to control the levels of sugar (glucose) in your blood. If your body does not make enough insulin to meet its needs, or if it does not use the insulin it makes effectively, this results in the condition called diabetes (diabetes mellitus).
People with diabetes need treatment to control the amount of sugar in their blood. This is because good control of blood sugar levels reduces the risk of complications later on. Some people can control the sugar in their blood by making changes to the food they eat but for other people, medicines like tolbutamide are given alongside the changes in diet.
Tolbutamide works by increasing the amount of insulin that your pancreas produces. It can be given on its own or alongside other antidiabetic medicines or insulin.
Before taking tolbutamide
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 tolbutamide it is important that your doctor knows:
Om du är gravid eller ammar.
Om du har några problem med hur din lever fungerar, eller om du har några problem med hur dina njurar fungerar.
If you have been told you have either porphyria or glucose-6-phosphate dehydrogenase (G6PD) deficiency. These are both rare inherited disorders.
Om du tar några andra läkemedel. Detta inkluderar alla läkemedel som kan köpas utan recept, samt växtbaserade och komplementära läkemedel.
Om du någonsin har haft en allergisk reaktion mot en medicin.
How to take tolbutamide
Before you start the treatment, read the manufacturer's printed information leaflet from inside the pack. It will give you more information about tolbutamide, and it will also provide you with a full list of the side-effects which you could experience from taking it.
Take tolbutamide exactly as your doctor tells you to. It is usually prescribed as a once-daily dose of 1-3 tablets (500 mg strength) with breakfast, although some people are asked to take the tablets in divided doses over the day. Your doctor or pharmacist will tell you which is right for you, and this information will also be printed on the label of the pack of tablets to remind you about what the doctor said.
If you are asked to take tolbutamide as a once-daily dose, take the tablets during your breakfast or immediately afterwards. If you are asked to take several doses of tolbutamide during a day, then take each of the doses during a mealtime or immediately afterwards. Swallow the tablets with a drink of water.
If you forget to take a dose, take it at the next mealtime. Try to take the correct number of tablets each day, but do not take two doses together to make up for a missed dose.
Få ut det mesta av din behandling
It is important that you keep your regular doctor's and clinic appointments. This is so your progress can be monitored. You are likely to need regular check-ups with an eye clinic and a foot clinic as well as with your doctor and diabetes clinic.
Your doctor may recommend that you test for sugar (glucose) in your blood regularly to check that your diabetes is being controlled. Your doctor or diabetes nurse will show you how to do this.
If you have been given advice by your doctor about changes to your diet, stopping smoking or taking regular exercise, it is important for you to follow the advice you have been given.
Make sure you know what it feels like if your blood sugar is too low. This is known as hypoglycaemia, or a 'hypo'. The first signs of hypoglycaemia are feeling shaky or anxious, sweating, looking pale, feeling hungry, having a feeling that your heart is pounding (palpitations), and feeling dizzy. If this happens, eat something containing sugar, such as dextrose tablets, or sugary sweets or drinks (non-diet), and then follow this up with a snack such as a sandwich or a banana.
Hypoglycaemia can occur in particular if you miss a meal, if you exercise more than usual, if you are ill, or if you drink a lot of alcohol.
If you are a driver you should take special care, as your ability to concentrate may be affected if your diabetes is not well controlled. You may be advised to check your blood sugar levels before you travel and to have a snack with you on long journeys.
Drivers in the UK may need to inform the Driver and Vehicle Licensing Agency (DVLA) if they experience an episode of severe hypoglycaemia or experience a 'hypo' whilst driving. Ask your doctor for advice. Drivers in other countries should contact the relevant vehicle licensing agency.
Check with your doctor before taking up any new physical exercise, as this will have an effect on your blood sugar levels and you may need to check your blood levels more regularly.
Drinking alcohol is not advisable with tolbutamide. If you do have a drink, keep well within the recommended alcohol limits, as alcohol will affect the control of your blood sugar.
If you get unusually thirsty, pass urine more frequently, and feel very tired then let your doctor know. Your dose of tolbutamide may need adjusting.
If you are due to have an operation or dental treatment, you should tell the person carrying out the treatment that you have diabetes and that you are taking tolbutamide.
If you buy any medicines, check with a pharmacist that they are suitable for you to take. This is because some medicines may interfere with tolbutamide.
Treatment for diabetes is lifelong. Continue to take the tablets unless you are advised otherwise by your doctor.
Can tolbutamide 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 associated with tolbutamide. The best place to find a full list of the side-effects which can be associated with your medicine is from the manufacturer's printed information leaflet supplied with the medicine. Alternatively, you can find an example of a manufacturer's information leaflet in the reference section below. Speak with your doctor or pharmacist if any of the following continue or become troublesome.
Tolbutamide side-effects - these occur only rarely | Vad kan jag göra om jag upplever detta? |
Huvudvärk | Drick mycket vatten och be din apotekare rekommendera en lämplig smärtstillande. Om huvudvärken fortsätter, informera din läkare |
Increased appetite and weight, stomach upset (sickness, constipation or diarrhoea), ringing in the ear (tinnitus) | Om det är besvärligt, prata med din läkare |
Signs of low blood sugar : feeling shaky or anxious, sweating, looking pale, feeling hungry, feeling that your heart is pounding (palpitations), feeling dizzy | Eat something containing sugar, such as a biscuit or a sugary drink (not diet), and follow this up with a snack such as a sandwich. Tell your doctor if you notice these symptoms, as your dose may need adjusting |
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 tolbutamide
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
Ta aldrig mer än den föreskrivna dosen. Om du misstänker att du eller någon annan kan ha tagit en överdos av denna medicin, gå omedelbart 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 webbplats.

Osäker på att blanda mediciner?
Kontrollera möjliga interaktioner mellan läkemedel, kosttillskott och livsmedel innan du tar dem tillsammans.
Vanliga frågor
Can I take tolbutamide if I'm trying to get pregnant?
The article states that your doctor needs to know if you are pregnant or breastfeeding before you start taking tolbutamide. It's important to discuss your plans to conceive with your doctor so they can advise you on the most suitable treatment for your diabetes during this time.
I occasionally forget to take my tolbutamide. What should I do?
If you forget to take a dose, you should take it at the next mealtime. It's important to try and take the correct number of tablets each day. However, never take two doses together to try and catch up for a missed dose.
How often will I need to see my doctor once I start taking tolbutamide?
You will need to keep your regular doctor's and clinic appointments so your progress can be monitored. This includes regular check-ups with your doctor, a diabetes clinic, an eye clinic, and a foot clinic.
What should I do if I notice changes in my thirst, urination, or energy levels while on tolbutamide?
If you find yourself unusually thirsty, passing urine more frequently, or feeling very tired, you should let your doctor know. These could be signs that your tolbutamide dose may need adjusting to better control your blood sugar.
Can I use over-the-counter medicines or herbal remedies while taking tolbutamide?
Before you start taking tolbutamide, it's important to inform your doctor about all other medicines you are taking, including any available without a prescription, as well as herbal and complementary medicines. Additionally, if you buy any new medicines, check with a pharmacist to ensure they are suitable for you to take, as some medicines can interfere with tolbutamide.
Vidare läsning och referenser
- Manufacturer's PIL, Tolbutamide 500 mg Tablets; Waymade Plc, Sovereign Medical. Dated January 2017.
- 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.
Artikeln finns också på Engelska, Tyska, Spanska, Franska, Italienska, Portugisiska, Hindi, Hebreiska, Arabiska, och Svenska.
Next review due: 6 May 2027
7 Nov 2022 | Senaste versionen

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