Fybogel ispaghula husk

What is Fybogel (ispaghula husk)?

Fybogel (ispaghula husk) is a bulk-forming laxative made from ispaghula husk, a natural dietary fibre. It helps to relieve constipation and supports regular bowel movements. Fybogel is available over the counter as sachets that you mix with water to make a lemon or orange-flavoured drink[1]. 

What is Fybogel (ispaghula husk) used to treat?

Fybogel (ispaghula husk) is mainly used to[1]: 

• Treat constipation 

• Manage irritable bowel syndrome (IBS) with constipation 

• Support bowel health in diverticular disease 

• Maintain regular bowel movements after bowel surgery or in people with haemorrhoids 

How does Fybogel (ispaghula husk) work?

Ispaghula husk absorbs water in the digestive tract and swells to form a soft, bulky stool. This helps[1]: 

• Stimulate the bowel to move stool along naturally 

• Make stools easier to pass 

• Regulate bowel function and improve regularity 

• Fybogel usually takes between 12 and 72 hours to work. 

Who can take Fybogel (ispaghula husk)?

Fybogel (ispaghula husk) is suitable for adults and children over 6 years old. However, it may not be safe for some people, including those who[1]: 

• Experience a sudden change in bowel habits lasting over two weeks 

• Have difficulty swallowing 

• Have intestinal blockages or narrowing 

• Are on a low-potassium or low-sodium diet 

• Are allergic to ispaghula or any ingredients in Fybogel 

Please tell your doctor or pharmacist about any conditions you may have or medication you take before you start treatment, and always follow the instructions in the Patient Information Leaflet[2].  

What is the typical dosage of Fybogel (ispaghula husk)?

The typical dosage is[1]: 

• Adults and children over 12 years: 1 sachet in the morning and 1 in the evening 

• Children aged 6 to 12 years: half to one sachet in the morning and evening 

• Children under 6: half to 1 level 5ml spoonful of granules twice a day, under medical supervision only 

Always follow the instructions on the packaging or as directed by your healthcare provider. 

How do you take Fybogel (ispaghula husk)?

To take Fybogel (ispaghula husk)[1]: 

1. Empty one sachet (or dosage as above) into a glass. 

2. Add about 150ml (¼ pint) of cold water. 

3. Stir well and drink immediately. 

4. Drink plenty of fluids throughout the day to help the laxative work properly. 

Can you stop taking Fybogel (ispaghula husk)?

Yes, you can stop taking Fybogel (ispaghula husk) once your bowel movements have returned to normal. It is not habit-forming, but if you need to use it long-term, speak to your doctor for advice[1]. 

What happens if you take too much Fybogel (ispaghula husk)?

Taking too much Fybogel (ispaghula husk) may cause[1]: 

• Bloating 

• Stomach cramps 

• Flatulence (wind) 

• Intestinal blockage (rare) 

If you think you have taken too much, seek medical advice promptly. 

What if you forget to take Fybogel (ispaghula husk)?

If you forget to take your dose[1]: 

• Take the missed dose as soon as you remember 

• If it’s almost time for your next dose, skip the missed one 

• Do not take a double dose to make up for the one you missed 

What medicines can you take with Fybogel (ispaghula husk)?

Fybogel (ispaghula husk) can affect how other medicines are absorbed. To avoid this, take other medicines either at least one hour before or four hours after taking Fybogel. Be especially careful with[1]: 

• Thyroid medications 

• Medicines for osteoporosis 

• Iron supplements 

• Stomach medication like mesalazine 

• Any other laxatives you’re taking – get advice from your doctor first 

• Some heart and epilepsy medicines like carbamazepine and digoxin 

Always inform your doctor or pharmacist about all medications and supplements you take before you start a new medicine, and follow the instructions in the Patient Information Leaflet[2]. 

What are the side effects of Fybogel (ispaghula husk)?

The most common side effects include[1]: 

• Bloating 

• Flatulence 

• Mild abdominal discomfort 

The rarer, but potentially more serious side effects may include[1]: 

• Allergic reactions like rash, itching, or swelling 

• Intestinal blockage if not taken with enough water 

You should contact your GP if you experience any of these symptoms. In rare cases, the medicine may cause a serious allergic reaction (anaphylaxis). You should call 999 or visit A&E immediately if you believe this is happening[1]. 

Symptoms of anaphylaxis include: 

• Difficulty breathing 

• Tightness in throat and chest 

• Swelling of the tongue or throat 

• Feeling faint or dizzy 

• Blue/grey skin or lips 

• Loss of consciousness 

If you experience any side effects, including those not listed, you are encouraged to report them via the Yellow Card Scheme or contact your doctor, pharmacist, or nurse. This information is intended as a summary for general awareness and does not replace professional medical advice. 

The information provided in the side effects section is not a comprehensive list of all possible side effects associated with this medication. For a complete list of side effects, please refer to the Patient Information Leaflet (PIL) provided with your medication or consult your healthcare professional[2]. 

Frequently asked questions about Fybogel (ispaghula husk)

Can I take Fybogel (ispaghula husk) every day? 
Yes, you can take Fybogel (ispaghula husk) daily, but long-term use should be supervised by a healthcare professional[1]. 

Is Fybogel (ispaghula husk) safe during pregnancy? 
Fybogel (ispaghula husk) is generally safe during pregnancy, but it’s best to check with your doctor first[1]. 

Can I take Fybogel (ispaghula husk) with food? 
Yes, Fybogel (ispaghula husk) can be taken with or after meals. Constipation can be made worse by certain foods such as cheese, cake, sweets, puddings and pastries[1]. 

Is Fybogel (ispaghula husk) suitable for IBS? 
Yes, Fybogel (ispaghula husk) is especially helpful for IBS when constipation is a problem[1]. 

For the official NHS guide for Fybogel (ispaghula husk), visit their website.