It is recommended that you also refer to as the Summary of Product Characteristics may have been updated since this copy was printed.

Reckitt Benckiser Ireland Limited

Reckitt Benckiser Ireland Limited

Summary of Product Characteristics last updated on 31/7/2015

Fybogel Citrus


Fybogel Citrus 3.5 g Granules


Each single dose sachet contains 3.5 g ispaghula husk.

Excipients: each sachet contains 0.016g aspartame.

For a full list of excipients, see section 6.1.



Semi-transparent buff coloured granules with an odour of orange.


4.1 Therapeutic indications

In the management of patients requiring a high-fibre regimen.

4.2 Posology and method of administration

Adults and children over 12 years: One sachet or two 5 ml spoonfuls each morning and evening, preferably after meals.

Elderly: There is no indication that dosage need be modified for the elderly.

Children 6 to 12 years: Half to one level 5 ml spoonful, depending on age and size, morning and evening.

Children under 6 years: To be taken only when prescribed by a doctor. The usual dose is half to one level 5 ml spoonful, depending on age and size, morning and evening.

Fybogel Citrus is intended for oral use after suspension in water. The granules should be stirred into a glass of water and taken as soon as the effervescence subsides. Concentrated fruit juices or natural juice may be added to taste.

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 sensitization to the active ingredient.

The last dose should not be taken immediately before going to sleep.

If there have been no bowel movements after 3 days of treatment a doctor should be consulted. (See section 4.4).

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.

The effects start 12-24 hours later.

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.

4.3 Contraindications

Hypersensitivity to the active substance ispaghula husk, or to any of the excipients listed in section 6.1 (see 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.

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.

4.4 Special warnings and precautions for use

Use is not recommended in children below 6 years of age due to insufficient data on efficacy. Laxative bulk producers should be used before using other purgatives if change of nutrition is not successful.

The product should not be taken dry and should always be taken mixed with fluid (8 fluid ounces or 240mL of water or other liquid per sachet).

Psyllium seed 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.

If abdominal pain occurs or in cases of any irregularity of faeces, the use of psyllium seed should be discontinued and medical advice should 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.

Should not be taken immediately before sleep.

Due to its aspartame content Fybogel Citrus should not be given to patients with phenylketonuria.

If symptoms persist longer than 3 days, the patient should consult a doctor.

Warning on hypersensitivity reactions: In individuals with continued occupational contact to powder of Plantago ovate seeds (i.e. healthcare workers, caregivers) allergic sensitization may occur due to inhalation, this is more frequent in atopic individuals. This sensitization usually leads to hypersensitivity reactions which could be serious (see 4.8 Undesirable effects).

It is recommended to assess clinically the possible sensitization of individuals at risk and, if justified, to perform specific diagnostic tests.

In case of proven sensitization leading to hypersensitivity reactions, exposure to the product should be stopped immediately and avoided in the future (see 4.3 Contraindications).

4.5 Interaction with other medicinal products and other forms of interaction

None known.

Ispaghula and other bulk-forming laxatives may delay or reduce the gastrointestinal absorption of other drugs such as cardiac glycosides, coumarin derivatives, lithium, or vitamins (such as vitamin B12) and minerals (such as calcium, iron or zinc). 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 psyllium seed concomitantly with thyroid hormones requires medical supervision because the dose of the thyroid hormones may have to be adjusted.

4.6 Fertility, pregnancy and lactation

There are no data from the use of psyllium seed, and limited 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).

The use of psyllium seed 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.

4.7 Effects on ability to drive and use machines


4.8 Undesirable effects

Adverse events which have been associated with ispaghula husk 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.

Special attention should be given to individuals manipulating the powder formulations routinely (see 4.4 Special warnings and precautions for use).

System Organ Class


Adverse Events

Immune system disorders

Not known

Hypersensitivity reactions with pruritus, bronchospasm and anaphylaxis1

Eye disorders

Not known


Respiratory, thoracic and mediastinal disorders

Not known


Gastrointestinal disorders

Not known

Flatulence, abdominal distension, intestinal obstruction, oesophageal obstruction, faecal impaction2

Skin and subcutaneous tissue disorders

Not known

Skin rash1

Description of Selected Adverse Reactions

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.

Flatulence and bloating may be experienced 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 Pharmacovigilance Section, Health Products Regulatory Authority, Kevin O'Malley House, Earlsfort Centre, Earlsfort Terrace, IRL – Dublin 2; Tel: +353 1 6764971; Fax: +353 1 6762517; Website:; e-mail:

4.9 Overdose

In the event of overdosage, conservative measures should be taken. The patient may notice abdominal discomfort and flatulence, and attention should be paid to maintaining an adequate fluid intake, particularly if the granules have been taken without water contrary to administration instructions.


5.1 Pharmacodynamic properties

Pharmacotherapeutic Group: Ispaghula (Psylla seeds); ATC Code: A06AC01

The active ingredient psyllium seed consists of the dried ripe, whole seeds of Plantago afra L. (Plantago psyllium L.) or Plantago indica L. (Plantago arenaria Waldstein and Kitaibel). Psyllium seed is particularly rich in alimentary fibres and mucilages. Psyllium seed is capable of absorbing up to 40 times its own weight of water in vitro, and part of its activity can be attributed to its action as a simple bulking agent. Psyllium seed consists of 10-12% mucilage polysaccharides, which are located in the episperms. It is partly fermentable (in vitro 72% unfermentable residue) and acts by hydration in the bowel.

Gut motility and transit rate can be modified by psyllium through mechanical stimulation of the gut wall as a result of the increase in intestinal bulk by water and the decrease in viscosity of the luminal contents or by contact with rough fibre particles. When taken with a sufficient amount of liquid( at least 30 ml per 1 g of herbal substance) psyllium produces an increased volume of intestinal contents due to its highly bulking properties and hence a stretch stimulus, which triggers defaecation; at the same time the swollen mass of mucilage forms a lubricating layer, which make the transit of intestinal contents easier. Progress of action: Psyllium seed usually acts within 12 to 24 hours after single administration. Sometimes the maximum effect is reached after 2 to 3 days.

5.2 Pharmacokinetic properties

The mode of action of Fybogel Citrus is physical and does not depend on absorption into the systemic circulation.

The material hydrates and swells to form a mucilage because it is only partially solubilised. Polysaccharides, such as those which dietary fibres are made of, must be hydrolysed to monosaccharides before intestinal update can occur. The sugar residues of the xylan backbone and the side chains are joined by β-linkages, which cannot be broken by human digestive enzymes.

Less than 10% of the mucilage gets hydrolysed in the stomach, with formation of free arabinose. Intestinal absorption of the free arabinose is approximately 85% to 93%.

To varying degrees, dietary fibre is fermented by bacteria in the colon, resulting in production of carbon dioxide, hydrogen, methane, water, and short-chain fatty acids, which are absorbed and brought into the hepatic circulation. In humans, such fibre reaches the large bowel in a highly polymerised form that is fermented to a limited extent, resulting in increased faecal concentration and excretion of short-chain fatty acids.

5.3 Preclinical safety data

Ispaghula husk was fed to rats at levels high as 10% of the diet for periods up to 13 weeks (three 28-day studies, one 13-week study). The consumption ranged from 3,876 to 11,809 mg/kg/day (3-16 times of the human dosage calculated for a 60 kg human). Effects seen were lower serum total protein, albumin, globulin, total iron-binding capacity, calcium, potassium, and cholesterol; and higher aspartate transaminase and alanine transaminase activities related to control. The absence of any increases in urinary protein and any differences in growth or feed efficiency in ispaghula husk fed rats may give evidence that there are no adverse effects on protein metabolism. Because the absorption of ispaghula husk is very limited, histopathological evaluation were limited to the gastrointestinal tract, liver, kidneys and gross lesions without observing any treatment-related effect. In a study on fertility, embryo-foetal development and pre- and post natal development (multigeneration study) ispaghula husk (0,1,2.5 or 5% (w/w) of the diet) was administered to rats continuously through two generations. For fertility and foetal development and teratogenesis the NOAEL was 5% of the diet, while the offspring growth and development the NOAEL was given with 1% of the diet based on reductions in pup weights. The study on embryo-foetal development in rabbits (ispaghula husk as 0, 2.5, 5 or 10% (w/w) of diet) has to be considered as preliminary. Conclusions cannot be drawn.

Tests on genotoxicity and carcinogenicity have not been performed.


6.1 List of excipients

Citric acid anhydrous

Potassium hydrogen carbonate

Sodium hydrogen carbonate

Orange flavour

Aspartame E951

Beta-carotene 10% CWS/S (E160a) (contains: Beta carotene, All-rac-α-tocopherol, Maize oil refined, Maize Starch and Modified food starch)

Riboflavin sodium phosphate

Saccharin sodium E954

Silica colloidal anhydrous

Polysorbate 80

6.2 Incompatibilities

Not applicable.

6.3 Shelf life

2 years.

6.4 Special precautions for storage

Do not store above 30°C. Store in the original package in order to protect from moisture.

6.5 Nature and contents of container

Sachets of paper/aluminium foil/polythene/Surlyn laminate enclosed in a cardboard outer carton.

Carton containing 2, 10 and 30 sachets.

Not all pack sizes may be marketed.

6.6 Special precautions for disposal and other handling

See section 4.2

The granules are semi-transparent and buff-coloured with an odour of orange which when added to water form an effervescent suspension.


Reckitt Benckiser Ireland Limited

7 Riverwalk

Citywest Business Campus

Dublin 24



PA 979/9/1.


Date of first authorisation: 27th January 1975

Date of last renewal: 27th January 2010


April 2015

It is recommended that you also refer to as the Summary of Product Characteristics may have been updated since this copy was printed.