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Diarrhoea

Imodium Syrup SF

Imodium syrup is an extremely effective treatment for acute and chronic diarrhoea. It contains loperamide which is an antimotility agent. It works by slowing down the movement of the bowel, letting food stay in the gut longer and allowing the body to absorb more fluids and salts from it.

Diarrhoea is caused by food moving through the intestines too quickly, resulting in loose and watery stools. By slowing this movement down, it means that bowel movements become firmer and less frequent, reducing the amount of urgency you feel.

Imodium syrup only treats the symptoms of diarrhoea and doesn’t cure it or treat its cause, so it’s a good idea to purchase rehydration sachets as well so that your body can replace the lost fluids and salts, preventing you from becoming dehydrated.


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  • Dronedarone
  • Velpatsavir
  • HIV treatments
  • Quinidine
  • Oral desmopressin
  • Antifungals similar to ketoconazole
  • Gemfibrozil
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  • Severe diarrhoea associated with antibiotics
  • Inflammatory bowel disease such as Crohn's or colitis
  • Constipation, or your stomach appears to be swollen
  • Acute dysentery
  • Liver disease
  • Diarrhoea for more than 48 hours (unless associated with diagnosed IBS)
  • Intolerant to some sugars
  • Severe diarrhoea
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  • You shouldn't take loperamide for regular diarrhoea for more than 48 hours. Speak to your GP if your symptoms are still present after this amount of time. 
  • If your diarrhoea is associated with IBS, you shouldn't take loperamide for more than 14 days without speaking to your doctor. 
  • Some people may feel tired after taking loperamide. If this happens to you, you should avoid driving or operating machinery until the feeling subsides
  • You should always drink plenty of fluids when you have diarrhoea, as you're more likely to become dehydrated. 
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  • You have an allergy or hypersensitivity to loperamide
  • You've used this treatment before and suffered from serious side effects
  • You're already taking loperamide for something other than diarrhoea
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Dr. Diana Gall GMC No. 7685129

Dr Diana Gall graduated from medical school in 2005 and has since undertaken further intensive training in many different areas of medicine. Dr Diana has reached consultant level and has practiced medicine all over Europe.

Shamir Patel GPHC No. 2049338

Shamir is a well-respected pharmacist with extensive experience running online pharmacies in the UK.

What is Imodium syrup?

Imodium syrup is used for the treatment of acute and chronic diarrhoea. It contains the medicine loperamide, an antimotility agent that works to treat the symptoms of diarrhoea.

Imodium is a brand of medicine that comes in several different forms and strengths, including Imodium syrup.

How does Imodium syrup work?

Diarrhoea is an extremely common condition that will be experienced by almost everyone at some point in their lives. It’s likely that you’ll need Imodium syrup at some point, so it’s important to understand exactly how the medicine works in your body.

Loperamide is an antimotility agent, and actually the most common medicine for the treatment for diarrhoea.

The symptoms of diarrhoea are caused by an overactive bowel, meaning that food passes through the bowel too quickly, resulting in loose and watery stools.

Imodium syrup work by slowing down the movement of the bowel, letting food stay in the gut for a longer period of time. This allows the body to absorb more water and salts thorough the intestines, resulting in firmer and less frequent bowel movements.

Other antimotility agents include:

  • Kaolin
  • Morphine
  • Diphenoxylate
  • Codeine

When looking at the list of alternative medicines, it’s easy to see why loperamide is the favoured treatment as it carries fewer risks and side effects.

It’s important to know that Imodium only treats the symptoms of diarrhoea and doesn’t necessarily cure it or treat the cause. As a lot of fluids and salt are lost through diarrhoea, you might also need to purchase some rehydration sachets (such as Dioralyte) to help your body to replace the lost fluids and salts. Imodium can help the body to absorb more of these through the intestine but not enough to replenish what’s already been lost.

Can I take Imodium syrup?

The good news about Imodium syrup is that most people are able to take it. However, there are some that should avoid using the medicine due to the potential risks of using an antimotility drug in conjunction with the following conditions:

  • An allergy to any of the ingredients
  • An ileus (lack of movement in the intestines and possible blockage)
  • Constipation
  • Abdominal distension
  • Acute ulcerative colitis
  • Bacterial enterocolitis (colitis caused by salmonella, shigella or campylobacter bacteria
  • Colitis caused by antibiotics

If you have any of those conditions, then Imodium syrup probably isn’t the best course of treatment for you. There are also some other people that should speak to a doctor before using Imodium syrup for diarrhoea and these include:

  • Those who suffer with liver problems
  • Those with AIDS whose stomach has become swollen
  • Those with acute dysentery (categorised by blood in your stools and a high temperature)

What does Imodium syrup interact with?

Imodium syrup might affect the way some other medicines work or vice versa. It’s up to your GP to determine whether it’s safe for you to use Imodium syrup if you’re also using any of the following medicines:

  • Ritonavir (treats HIV)
  • Quinidine (for the treatment of arrhythmia or malaria)
  • Iitraconazole, ketoconazole (for the treatment of some fungal infections)
  • Gemfibrozil (to lower cholesterol levels)
  • Oral desmopressin (for the treatment of excessive urination)
  • Other drugs that might speed up or slow down the movement of the gut

You might still be able to use Imodium syrup if you’re already taking one of the above medicines. Alternatively, your GP might prescribe a different medicine for the treatment of diarrhoea

What are the side effects of Imodium syrup?

Most medicines, including Imodium, can cause some unpleasant side effects, but it’s important to know that you might not experience any of them. In fact, some of the commonly reported side effects for Imodium might actually be caused by the diarrhoea itself and not the medicine. They include:

  • Headache
  • Dizziness
  • Nausea
  • Constipation
  • Wind
  • Drowsiness
  • Dry mouth
  • Vomiting
  • Indigestion
  • Rash

These are only the most commonly reported side effects, and there are more in the patient information leaflet. Always make sure you read the leaflet that comes with your medication to make sure you’re fully aware of what is does, what side effects it might cause, and what to look out for in terms of an emergency.

Because you might feel tired or dizzy, please wait until you know how Imodium syrup affects you before driving. However, if you feel unwell with the diarrhoea anyway, it’s a good idea to wait until you feel better until you attempt to travel.

How do you take Imodium syrup?

The amount of syrup you need is completely dependent on your symptoms and severity of the diarrhoea.

Imodium syrup comes with a measuring cup which makes it easy to administer the correct amount of medicine. In most cases, you’ll need to take four 5ml doses initially, followed by two 5ml doses after each loose bowel movement.

You shouldn’t take the medicine for more than 5 days, and if your symptoms haven’t eased after 2 days, you must visit your doctor as soon as possible as it might be another, more serious condition, or just require different treatment.

Don’t exceed more than 16 doses in any 24 hour period. However, your doctor may increase the amount of Imodium you take based on whether they think it’s appropriate to do so with your current symptoms.

How is my order shipped to me?

When an order is ready for shipping, it is collected and delivered by either the Royal Mail or DPD depending on your preference (or possibly your location or the item you ordered). Each order is assigned a tracking number, which will be emailed to you at the time of dispatch. Your medicine will be sent in plain and discreet packaging that’s eco-friendly. We do not include any branding on our packaging nor any labels which inform readers what type of product is contained within.

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Delivery Charges

The following delivery methods are currently available within the UK: All orders are sent in discreet, plain packaging.

UK Standard Delivery, £1.99

Order before 12pm to have your order delivered using Royal Mail Tracked 48 Service

standard UK delivery within 3-5 working days

Additional terms and conditions apply.

UK Express Delivery, £2.99

Order before 12pm to have your order delivered using the Express delivery service* (deliveries are made Monday - Saturday)

If you order after 12pm, your order will be dispatched the next working day and will be with you within 48 hours once dispatched. This excludes weekends and bank holidays

Additional terms and conditions apply.

Royal Mail Special Delivery Next Day Anytime, £4.99 (This service includes Saturday)

Order before 12pm to have your order delivered using Royal Mail Special Delivery Service, which includes Saturday deliveries.

Additional terms and conditions apply.

Royal Mail Special Delivery Next Day Before 1pm, £7.99 (This service includes Saturday)

Order before 12pm to have your order delivered before 1pm next day using Royal Mail Special Delivery service, this also includes Saturday deliveries.

Additional terms and conditions apply.

Royal Mail Special Delivery Next Day Before 9am, £14.99 (This service includes Saturday)

Order before 12pm to have your order delivered before 9am next day using Royal Mail Special Delivery service, this also includes Saturday deliveries.

Additional terms and conditions apply.

DPD Next Day Delivery, £4.99 (Monday - Friday only. This service does not include Saturday)

Orders signed by the doctor before 12 noon the day before will be delivered the following working day

If your order is signed by the doctor after 12 noon, your order will be delivered within 2 working days

Additional terms and conditions apply.

DPD Next Day Delivery, by 12 Noon, £9.99 (Monday - Friday only. This service does not include Saturday)

Orders signed by the doctor before 12 noon the day before will be delivered by 12 noon the following working day

If your order is signed by the doctor after 12 noon, your order will be delivered within 2 working days

Additional terms and conditions apply.

DPD Next Day Delivery, by 10:30am, £14.99  (Monday - Friday only. This service does not include Saturday)

Orders signed by the doctor before 12 noon the day before will be delivered by 10:30am the following working day

If your order is signed by the doctor after 12 noon, your order will be delivered within 2 working days

Additional terms and conditions apply.

DPD Saturday Delivery, £14.99

Orders signed by the doctor before 12 noon the day before will be delivered the following Saturday

If your order is signed by the doctor after 12 noon, your order will be delivered within 2 working days

Additional terms and conditions apply

DPD Saturday Delivery, by 12:00am, £21.99

Orders signed by the doctor before 12 noon the day before will be delivered by 12:00am Saturday

If your order is signed by the doctor after 12 noon, your order will be delivered within 2 working days

Additional terms and conditions apply.

DPD Saturday Delivery, by 10:30am, £29.99

Orders signed by the doctor before 12 noon the day before will be delivered by 10:30am Saturday

If your order is signed by the doctor after 12 noon, your order will be delivered within 2 working days

Additional terms and conditions apply, please see below.

US and outside the UK

Unfortunately, we can't process orders from outside the UK at this time.


Terms and Conditions

Delivery options exclude Bank Holidays, public holidays and Sundays.All deliveries are subject to Doctor-4-u successfully receiving payment and prescription being approved by the doctor.

All purchases require additional approval, which will involve completion of an online questionnaire and any subsequent approval.

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