Patient leaflets and SmPCs, drug interaction checker, official dosages and NHS pharmacy opening hours — all in one place.
Patient leaflets and SmPCs, drug interaction checker, official dosages and NHS pharmacy opening hours — all in one place.
The electronic medicines compendium (emc) no longer publishes a Summary of Product Characteristics for this product, which usually means it is no longer marketed in the UK. The patient leaflet below is kept for reference, but the product may not be available.
If you were prescribed this medicine, other products containing Ispaghula husk may still be available. Do not stop your treatment — ask your pharmacist or GP what to use instead.
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Take special care: •
if you are a healthcare worker or care giver as allergic sensitisation may occur due to inhalation.
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e Fybogel Hi-Fibre Lemon
Pharmacode Reads This Way
Fybogel Hi-Fibre Lemon contains the active substance Ispaghula Husk. It is an easy and convenient way to increase the fibre in your diet helping your digestive system work more efficiently and gently relieving constipation the natural way. As it works naturally with your body, it takes care of constipation without undue straining, discomfort or unnatural urgency, helping to restore and maintain regularity. Fybogel Hi-Fibre Lemon can be used whenever increased fibre is needed in your diet to relieve constipation; including constipation during pregnancy. It can also be used to help maintain normal bowel function if you suffer from haemorrhoids (piles).
Like all medicines, this medicine can cause side effects, although not everybody gets them. This product can cause allergic reactions with symptoms including difficulty in breathing, wheezing or coughing, skin rash, itching and a sudden life-threatening allergic reaction. This product contains allergens and it is possible to come into contact with them via skin, inhalation or when taking the product by mouth and may cause red or itchy eyes, runny or blocked nose and a skin rash. If symptoms appear, you should immediately stop using this product and contact your doctor or pharmacist. Due to the increased fibre intake of your diet you may experience wind (flatulence) or bloating during the first few days of taking this product, which should lessen as you continue to take it. If you have any other symptoms after taking this product, tell your doctor or pharmacist. If you get any side effects, talk to your doctor or pharmacist. This includes any
Fybogel Hi-Fibre Lemon 4. Possible side effects 5. How to store Fybogel Hi-Fibre Lemon 6. Contents of the pack and other information
4. Possible side effects
not listed in this leaflet. You can also report side effects directly via the internet at www.mhra.gov.uk/yellowcard. By reporting side effects you can help provide more information on the safety of this medicine. Keep this medicine out of the sight and reach of children. Store below 30°C in a dry place. Do not use after the expiry date stated on the carton.
Fybogel Hi-Fibre Lemon First Bar
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Pharmacode Reads This Way
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255 mm
What Fybogel Hi-Fibre Lemon contains Each single dose sachet contains 3.5 g Ispaghula Husk. Other ingredients are potassium bicarbonate, sodium bicarbonate, citric acid, riboflavine sodium phosphate, aspartame (E951), lemon flavour, saccharin sodium, polysorbate 80 and silica colloidal anhydrous. This medicine contains 16mg aspartame in each sachet. Marketing Authorization Holder and Manufacturer Reckitt Benckiser Healthcare (UK) Limited, Hull, HU8 7DS Manufacturer: RB NL Brands B.V. WTC Schiphol Airport, Schiphol Boulevard 207, 1118 BH Schiphol, Netherlands Marketing Authorization Number PL 00063/0150 Fybogel and the Fybogel logo are trade marks of the RB group of companies. Leaflet last revised October 2025
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CUSTOMER INFO Minimum Point Size =9.00pt
Fybogel Hi-Fibre Lemon Granules comes as granules. Always follow the dose your doctor or pharmacist has given you, and read the leaflet that comes with the medicine.
The active substance in Fybogel Hi-Fibre Lemon Granules is ispaghula husk.
Medicines with the same active substance, strength and form include: Fybogel Hi-Fibre Orange Granules, Fybogel Lemon Granules, Fybogel Orange Granules. In total there are 4 equivalent products. They are interchangeable only if your prescriber or pharmacist says so.
This leaflet reproduces the patient information leaflet approved for Fybogel Hi-Fibre Lemon Granules, as published on the electronic medicines compendium (emc). The version printed inside your medicine’s packaging is the one that applies to you.
Whether a medicine is available over the counter or on prescription only depends on its licence. Check the leaflet, or ask your pharmacist — they can tell you straight away.
The text above reproduces the patient information leaflet approved for this medicine, restructured for easier reading.
Clinical Indication: for the treatment of patients requiring a high fibre regimen: for example, for the relief of constipation, including constipation in pregnancy and the maintenance of regularity; for the management of bowel function in patients with haemorrhoids.
If there have been no bowel movements after three days of treatment a doctor or healthcare professional should be consulted. (See section 4.4 'Special warnings and precautions
Posology
Adults: One sachet, morning and evening.
Elderly: There is no indication that dosage needs to be modified for the elderly.
Paediatric Population
Children over 12 years: One sachet, morning and evening
Children aged 6 to 12 years: Half to one level 5ml spoonful depending on size and age, morning and evening.
Children under 6: The use in children under 6 years of age is not recommended (See section 4.4 'Special warnings and precautions for use').
The effect start 12-24hours later.
Method of Administration
This medicine is intended for oral use as a suspension in a drink of water. (See section 4.4) The granules should be stirred into a glass of water and taken as soon as possible, preferably after meals.
The product should be taken during the day at least ½ to 1 hour before or after intake of other medicines and should not be taken immediately before going to sleep.
When preparing the product for administration, it is important to try to avoid inhaling any of the powder in order to minimize the risk of sensitisation to the active ingredient.
Hypersensitivity to ispaghula husk or to any of the excipients listed in Section 6.1 (See Section 4.4 Special warnings and precautions for use).
Patients with a sudden change in bowel habit that has persisted more than two weeks.
Undiagnosed rectal bleeding and failure to defecate following the use of a laxative.
This medicine is contra-indicated in patients suffering from abnormal constrictions in the gastro-intestinal tract, with diseases of the oesophagus and cardia, intestinal obstruction, faecal impaction, natural or drug-induced reduction of gut motility and colonic atony such as senile mega-colon.
Patients who have difficulty in swallowing or any throat problems.
The product should not be taken dry and should always be taken mixed with fluid (5 fluid ounces or 150 mL of water or other liquid per sachet).
Ispaghula husk should not be used by patients with faecal impaction and symptoms such as abdominal pain, nausea and vomiting unless advised by a doctor because these symptoms can be signs of potential or existing intestinal blockage (ileus).
If abdominal pain occurs or in cases of any irregularity of faeces, the use of psyllium seed should be discontinued and medical advice must be sought.
When taken with inadequate fluid amounts, bulk forming agents can cause obstruction of the throat and oesophagus with choking and intestinal obstruction. Symptoms can be chest pain, vomiting, or difficulty in swallowing or breathing.
The treatment of debilitated patients and / or elderly patients requires medical supervision.
In order to decrease the risk of gastrointestinal obstruction ispaghula husk should not be used together with medicinal products known to inhibit peristaltic movement (e.g. opioids) and then only under medical supervision.
The last dose should not be taken immediately before going to sleep since impaired or reduced gastric motility may impair the intestinal passage and then cause sub-obstruction.
This medicine contains 16mg aspartame in each sachet.
Aspartame is a source of phenylalanine. It may be harmful if you have phenylketonuria (PKU), a rare genetic disorder in which phenylalanine builds up because the body cannot remove it properly.
This medicine contains less than 1 mmol sodium (23 mg) in each sachet, that is to say essentially 'sodium-free'.
This medicine contains 0.25 mmol (or 9.76 mg) potassium per sachet. To be taken into consideration by patients with reduced kidney function or patients on a controlled potassium diet.
If symptoms persist longer than 3 days, the patient should consult a doctor or healthcare professional.
Warning on hypersensitivity reactions: In individuals with continued occupational contact to powder of Plantago ovata seeds (e.g. healthcare workers, caregivers) allergic sensitisation may occur due to inhalation; this is more frequent in atopic individuals. This sensitisation usually leads to hypersensitivity reactions which could be serious (See 4.8 Undesirable effects).
It is recommended to assess clinically the possible sensitisation of individuals at risk and, if justified, to perform specific diagnostic tests.
In case of proven sensitisation leading to hypersensitivity reactions, exposure to the product should be stopped immediately and avoided in the future (See 4.3 Contraindications).
Paediatric Population
Use is not recommended in children below 6 years of age due to insufficient data on safety and efficacy. Laxative bulk producers should be used before using other purgatives if change of nutrition is not successful.
Enteral absorption of concomitantly administered medicines such as minerals, vitamins (B12), cardiac glycosides, coumarin derivatives, carbamazepine and lithium may be delayed. For this reason the product should not be taken ½ to 1 hour before or after intake of other medicinal products.
Diabetic patients should take ispaghula husk only under medical supervision because adjustment of anti-diabetic therapy may be necessary.
Use of ispaghula husk concomitantly with thyroid hormones requires medical supervision because the dose of the thyroid hormones may have to be adjusted.
Pregnancy
There are limited amount of data (less than 300 pregnancy outcomes) from the use of ispaghula husk in pregnant women. Animal studies are insufficient with respect to reproductive toxicity (see section 5.3 Preclinical safety data).
Breast-feeding
The use of ispaghula husk may be considered during pregnancy and lactation, if necessary and if change of nutrition is not successful. Laxative bulk producers should be used before using other purgatives.
Fertility
No known effects
Fybogel Hi-Fibre Lemon / Senokot Hi-Fibre Lemon has no or negligible influence on the ability to drive and use machines.
Special attention should be given to individuals manipulating the powder formulations routinely (see 4.4 Special warnings and precautions for use).
Adverse events which have been associated with ispaghula are given below, tabulated by system organ class and frequency. Frequencies are defined as: Very common (≥1/10); Common (≥1/100 and <1/10); Uncommon (≥1/1000 and <1/100); Rare (≥1/10,000 and <1/1000); Very rare (< 1/10,000); Not known (cannot be estimated from the available data). Within each frequency grouping, adverse events are presented in order of decreasing seriousness.
System Organ Class
Frequency
Adverse Events
Immune System Disorders
Not known
Hypersensitivity disorders1,2
Eye Disorders
Not known
Conjunctivitis2
Respiratory, Thoracic and Mediastinal Disorders
Not known
Rhinitis2
Gastrointestinal Disorders
Not known
Flatulence, abdominal distension, intestinal obstruction, oesophageal obstruction, faecal impaction3
Skin and Subcutaneous Tissue Disorders
Not known
Skin Rash2
Description of Selected Adverse Reactions
1 Including rash, anaphylaxis, pruritus, and bronchospasm
2 Ispaghula/psyllium husk contains potent allergens. The exposure to these allergens is possible through oral administration, contact with the skin and, in the case of powder formulations, also by inhalation. As a consequence to this allergic potential, individuals exposed to the product can develop hypersensitivity reactions such as rhinitis, conjunctivitis, bronchospasm and in some cases, anaphylaxis. Cutaneous symptoms such as exanthema and/or pruritus have also been reported.
3 A small amount of flatulence and abdominal distension may sometimes occur during the first few days of treatment, but should diminish during continued treatment. Abdominal distension and risk of intestinal or oesophageal obstruction and faecal impaction may occur, particularly if swallowed with insufficient fluid.
Reporting of Suspected Adverse Reactions
Reporting suspected adverse reactions after authorisation of the medicinal product is important. It allows continued monitoring of the benefit/risk balance of the medicinal product. Healthcare professionals are asked to report any suspected adverse reactions via the Yellow Card Scheme at: http://www.mhra.gov.uk/yellowcard.
Symptoms
Overdose with ispaghula husk may cause abdominal discomfort, flatulence and intestinal obstruction.
Management
Adequate fluid intake should be maintained and management should be symptomatic.
Ask anything about Fybogel Hi-Fibre Lemon Granules. The assistant answers only from this leaflet — if the leaflet does not cover it, it will say so. It does not give medical advice.
Answers come from the patient leaflet published on the electronic medicines compendium (emc). They are not medical advice. Ask a pharmacist or your GP if you are unsure. For urgent help call NHS 111, or 999 in an emergency.
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