Diarrhoea medicine
נבדק על ידי Dr Colin Tidy, MRCGPעודכן לאחרונה על ידי ד"ר טוני הייזל, MRCGPLast updated 26 מרץ 2023
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Diarrhoea medicines (medicines used to relieve diarrhoea symptoms) reduce the number of times that you need to go to the toilet, when you have acute diarrhoea. The most commonly used medicine is loperamide. You can buy this from your local pharmacy or get it on prescription from your doctor. Most people only need to take these medicines for a few days and they are not needed for every diarrhoeal illness. Children under the age of 12 years should not take diarrhoea medicines unless their doctor has told them to do so.

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Video picks for Digestive health medicines
המשך לקרוא למטה
מהו שלשול medicine?
Diarrhoea medicine is used to reduce the number of trips that you need to make to the toilet when you have diarrhoea. Two main types of diarrhoea medicines are used to treat diarrhoea. These are called antimotility medicines and bulk-forming agents:
Antimotility medicines
This type of diarrhoea medicine is used to treat acute diarrhoea. They include:
Codeine phosphate.
Co-phenotrope.
Loperamide.
Kaolin and morphine mixture.
The most commonly used antimotility medicine is loperamide (Imodium®). Kaolin and morphine mixture is very rarely used to treat diarrhoea nowadays. Antimotility medicines are generally not advised for children under the age of 12 and is only available to buy over the counter for those aged 12 or over.
Fluid replacement
It is important to remember that diarrhoea medicines are not the only treatments used for diarrhoea. The most important treatment is fluid replacement. See separate leaflets called Acute Diarrhoea in Children, and שלשול.
The rest of this leaflet deals only with antimotility medicines when they are used to ease the symptoms of acute diarrhoea. For information on bulk-forming agents, see separate leaflet called Irritable Bowel Syndrome.
How do antimotility diarrhoea medicines work?
חזרה לתוכןAntimotility medicines work by slowing down the movement of your gut, which reduces the speed at which the contents pass through. Food remains in your gut for longer and this allows more water to be absorbed back into your body. This results in firmer stools that are passed less often.
Antimotility medicines reduce the number of times you need to go to the toilet. This can be helpful in allowing you to continue your normal activities, or if you need to travel anywhere. However, there is no convincing evidence that they reduce the duration of the diarrhoea. Most cases of acute diarrhoea get better on their own in exactly the same amount of time, whether you take any medicines or not.
המשך לקרוא למטה
Which antimotility medicines are normally used to treat acute diarrhoea?
חזרה לתוכןLoperamide is the most commonly used antimotility medicine for acute diarrhoea. It is thought to be the safest and most effective antimotility medicine. Co-phenotrope ו codeine are used much less often than loperamide.
As discussed above, kaolin and morphine mixture is an older treatment for acute diarrhoea and is very rarely used nowadays.
When should I take an antimotility diarrhoea medicine?
חזרה לתוכןFor most adults and children older than 12 years, antimotility medicines are usually not necessary when they have a bout of diarrhoea. However, some people may wish to reduce the number of trips that they need to make to the toilet. For example, if you have to make an essential journey, taking antimotility medicines may help to make this possible.
Children should not be given antimotility medicines. This is because some children have had very serious side-effects after they have taken these medicines.
המשך לקרוא למטה
How should I take antimotility diarrhoea medicines?
חזרה לתוכןThe following directions are for adults only:
Loperamide - the adult dose of this is two capsules at first. This is followed by one capsule after each time you pass some diarrhoea, up to a maximum of eight capsules in 24 hours.
Co-phenotrope - the adult dose is four tablets at first. Six hours later, take two more tablets. After that, take two tablets every six hours.
Codeine phosphate - for adults, the usual dose is one 15 mg tablet, up to four times a day.
What is the usual length of treatment?
Most people only need to take an antimotility medicine for a few days. In general, you should not take these medicines for longer than five days unless your doctor has told you to do so.
Where can I buy diarrhoea medicine?
חזרה לתוכןYou can buy loperamide and co-phenotrope from your local pharmacy. You can also obtain both of these medicines from your doctor, on prescription. Codeine phosphate is only available from your doctor, on a prescription.
You can only buy kaolin and morphine mixture from your local pharmacy, but quite a few pharmacies do not keep this medicine any more.
Antisecretory medicines are only available from your doctor, on prescription.
Diarrhoea medicine side-effects
חזרה לתוכןThe most commonly reported adverse effects of antimotility diarrhoea medicines are:
Excessive farting (breaking wind).
Drowsiness (If this happens, do not drive and do not use tools or machines).
Rare symptoms you may experience are:
פריחות בעור.
Itchy skin.
Some children have very serious side-effects after they have taken these medicines - for example:
A condition where part of the gut dies (necrotising enterocolitis).
Confusion.
Depressed breathing.
Coma.
Some children have died after taking these medicines - this is very rare. However, this is why these medicines are not recommended for children.
For a full list of side-effects see the leaflet that comes with your medicine.
Who cannot take diarrhoea medicines?
חזרה לתוכןYou should not take diarrhoea medicine if:
You are younger than 12 years of age (unless prescribed by your doctor)
You have blood or mucus in the stools (faeces), and a חום גבוה (חום).
You have tummy (abdominal) distention.
You have inflammation of the gut (active ulcerative colitis).
You have inflammation of the gut caused by antibiotics (antibiotic-associated colitis).
What is acute diarrhoea?
חזרה לתוכןDiarrhoea is the passing of frequent loose or liquid stools (faeces). When this change to the stools starts suddenly and lasts for less than two weeks, the condition is known as acute diarrhoea. If it lasts more than two weeks, it is called persistent diarrhoea. If it lasts more than four weeks it is called chronic diarrhoea. There are a number of causes of acute diarrhoea:
Infection of the gut is the common cause. This is called acute infectious diarrhoea. Many bacteria, viruses and other germs can cause diarrhoea. Sometimes the germs come from infected food (הרעלת מזון). Infected water is a cause in some countries. Sometimes it is just 'one of those germs going about'. Viruses are easily spread from one person to another by close contact, or when an infected person prepares food for others.
Other causes are uncommon and include side-effects from some medicines, food allergy ו חרדה.
Gut disorders that cause chronic diarrhoea may be mistaken for acute diarrhoea when they first begin - for example, diarrhoea caused by קוליטיס כיבית.
Usually no treatment is required when you have acute diarrhoea, other than drinking plenty of fluids.
See the separate leaflets called שלשול ו Acute Diarrhoea in Children.
Patient picks for Digestive health medicines

טיפול ותרופות
Nausea medicine
Various medicines are available to treat nausea. They work in different ways to one another. These medicines are not usually started until your doctor is sure what has caused your nausea. This is because knowing the cause helps your doctor to choose the right medicine for you. If they are required then any medicine usually only needs to be taken for a few days. Most people are able to take these medicines.
מאת ד"ר דאג מקקנזי, MRCGP

טיפול ותרופות
H2 blockers
H2 blockers reduce the amount of acid made by your stomach. They are used in conditions where it is helpful to reduce stomach acid. For example, to help with acid reflux which causes heartburn. Most people who take H2 blockers do not develop any side-effects.
מאת ד"ר דאג מקקנזי, MRCGP

לא בטוחים לגבי ערבוב תרופות?
בדוק אינטראקציות אפשריות בין תרופות, תוספים ומזונות לפני נטילתם יחד.
קריאה נוספת והפניות
- שלשול והקאות בילדים מתחת לגיל 5; הנחיות קליניות של NICE (אפריל 2009; עודכן באוקטובר 2022).
- British National Formulary (BNF); NICE Evidence Services (UK access only)
- Diarrhoea - adult's assessment; NICE CKS, November 2023 (UK access only)
- Boland A, Tunnard GJ, Bazaz R; Over-the-counter kaolin and morphine: two hazards in one. BMJ Case Rep. 2010;2010:bcr07.2009.2117. doi: 10.1136/bcr.07.2009.2117. Epub 2010 Mar 26.
המשך לקרוא למטה
About the author

Jenny Whitehall
BSc (Hons), Diploma in Pharmacy Practice
About the reviewerView full bio

Dr Colin Tidy, MRCGP
General Practitioner, Medical Author
MBBS, MRCGP, MRCP (Paediatrics), DCH
Dr Colin Tidy is an NHS Doctor, based in Oxfordshire.
היסטוריית המאמר
המידע בעמוד זה נכתב ונבדק על ידי קלינאים מוסמכים.
Next review due: 24 Mar 2028
26 מרץ 2023 | הגרסה האחרונה
20 Apr 2012 | פורסם במקור
נכתב על ידי:
Jenny Whitehall

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