- sodium sulfate, anhydrous
- magnesium sulfate heptahydrate
- potassium sulfate
This information is intended for use by health professionals
This medicinal product is subject to additional monitoring. This will allow quick identification of new safety information. Healthcare professionals are asked to report any suspected adverse reactions. See section 4.8 for how to report adverse reactions.
|1 bottle containing about 176 ml concentrate (195.375 g)||2 bottles corresponding to 2 x about 176 ml concentrate (390.750 g)|
|Sodium sulphate anhydrous||17.510 g||35.020 g|
|Magnesium sulphate heptahydrate||3.276 g||6.552 g|
|Potassium sulphate||3.130 g||6.260 g|
|Content in g||Content in mmol|
|1 bottle||2 bottles||1 bottle||2 bottles|
AdultsTwo bottles of Izinova are needed for appropriate cleansing of the bowel. Prior to administration, the content of each bottle must be diluted in water, using the cup provided, to a total volume of approximately 0.5 litres, and must be followed by the ingestion of an additional 1 litre of water or clear liquid within 2 hours. Authorised clear liquids are: water, tea or coffee (no milk or non-dairy creamer), fizzy (carbonated) or still (non-carbonated) soft drinks, strained fruit juices without pulp (not coloured red or purple), clear soup or soup strained to remove any solids. In total, the volume of liquid intake required for bowel cleansing is approximately 3 litres taken orally prior to the procedure. This medicine can be taken either as a split-dose (two-day; with the first bottle taken the night before the procedure, and the second to be taken the following morning), or as a one-day oral preparation as described below (see Method of administration). The exact regimen and rate of ingestion of Izinova may be determined by the physician. If allowed by the timing of the procedure, the split-dose regimen should be favoured over the one- day regimen. The one-day dose regimen is a potentially useful alternative regimen.
Method of administration
SPLIT-DOSE (TWO-DAY) REGIMENThe day before the procedure: Early in the evening prior to the procedure (e.g.: 6:00 pm), the following instructions should be followed: • The content of one bottle of Izinova should be poured into the cup provided in the package and should be diluted with water to the fill line (i.e.: about 0.5 litres). • The patient should drink this diluted solution followed by two additional cups filled to the fill line with water or clear liquid (i.e.: approximately 1 litre) over the next two hours. The day of the procedure: On the morning of the procedure (10 to 12 hours after the evening dose), the instructions from the previous evening should be repeated: • The content of the second bottle of Izinova should be poured into the cup provided in the package and should be diluted with water to the fill line (i.e.: about 0.5 litres). • The patient should drink this diluted solution followed by two additional cups filled to the fill line with water or clear liquid (i.e.: approximately 1 litre) over the next two hours. The intake of the whole diluted solution of Izinova and additional liquid (water or clear liquid) should be completed: - In the absence of anaesthesia, at least one hour prior to the start of the procedure. - In case of anaesthesia, usually at least 2 hours prior to the start of the procedure, in accordance with the instructions of the anaesthetist. ONE-DAY DOSING REGIMEN (alternative dosing regimen for use depending on individual patient clinical requirement)
The evening before the procedure:Early in the evening prior to the procedure (e.g.: 6:00 pm): • The content of one bottle of Izinova should be poured into the cup provided in the package and should be diluted with water to the fill line (about 0.5 litres). • The patient should drink this diluted solution followed by two additional cups filled to the fill line with water or clear liquid (i.e.: approximately 1 litre) over the next two hours. Approximately 2 hours after the start of the first dose (e.g.: 8:00 pm): • The content of the second bottle of Izinova should be poured into the cup provided in the package and diluted with water to the fill line (about 0.5 litres). • The patient should drink this diluted solution followed by two additional cups filled to the fill line with water or clear liquid (i.e.: approximately 1 litre) over the next two hours. The intake of the whole diluted solution of Izinova and additional liquid (water or clear liquid) should be completed: - In the absence of anaesthesia, at least one hour prior to the start of the procedure. - In case of anaesthesia, usually at least 2 hours prior to the start of the procedure, in accordance with the instructions of the anaesthetist.
After the procedureIn order to replace fluid lost during the preparation for the procedure, patients should be encouraged to drink a sufficient amount of fluids afterwards to maintain adequate hydration.
Dietary restrictionsThe day prior to the procedure, a light breakfast may be consumed. Afterwards the patient should only have clear liquids for lunch, dinner and any other meals until the procedure is performed. Red and purple liquids, milk and alcoholic beverages should be avoided.
Elderly populationNo overall differences in safety or efficacy were observed between elderly patients and other patients during the clinical development of Izinova [see section 5.1]. Dose adjustment is not required in the elderly patients however; special precautions for use should be taken in this population as for any high-risk population [see section 4.4].
Patients with renal impairmentInsufficient data are available for this population. Dose adjustment is not required in the patients with mild to moderate renal impairment however special precautions should be taken in this population as for any high-risk population. Izinova should not be used in patients with severe renal impairment (see sections 4.3 and 4.4).
Patients with hepatic impairmentInsufficient data are available for this population. Dose adjustment is not required in the patients with hepatic impairment however special precautions should be taken in this population as for any high-risk population (see section 4.4).
Paediatric populationThe safety and efficacy of Izinova in the paediatric population (i.e. patients below 18 years old) have not yet been established. No data are available (see section 5.1).
Electrolyte disorders and dehydration:• Given the potential risk of severe electrolyte disorders, the benefit/risk ratio of Izinova needs to be carefully considered before initiating treatment in at-risk populations. Special attention should be given when prescribing Izinova to any patients with regard to known contraindications, and special precautions for use, including the importance of adequate hydration.• All patients should be advised to hydrate adequately before, during and after the use of Izinova. If a patient develops significant vomiting or signs of dehydration after taking the medicine, rehydration measures should be set up to avoid the potential risks of serious complications associated with fluid and electrolyte disturbances (such as seizure and cardiac arrhythmia). In addition, performing pre-procedure laboratory tests (electrolytes, creatinine and blood urea nitrogen) should be considered. The patient should be advised to drink as much additional water or clear liquids as necessary to maintain an appropriate level of hydration.
At-risk patients:• In debilitated fragile patients, elderly patients, those with clinically significant renal, hepatic or cardiac impairment and those at risk of electrolyte imbalance, the physician should consider performing a baseline and post-treatment electrolyte and renal function tests.• Patients presenting dehydration or patients with electrolyte abnormalities should have them corrected before administration of the bowel cleansing preparation. In addition, use caution in patients with conditions, or who are using medications, that increase the risk of fluid and electrolyte disturbances (including hyponatraemia and hypokalaemia) or may increase the risk of potential complications. In this case, patients should be appropriately monitored. • There is a theoretical risk that QT interval prolongation may occur as a result of electrolyte imbalance.
Use with caution in patients with:• Impaired gag reflex and patients prone to regurgitation or aspiration. Such patients should be observed during administration of the bowel cleansing preparation.• Gastrointestinal hypomotility disorders or a history of medical conditions or gastrointestinal surgery that predispose to hypomotility disorders.
Hyperuricaemia:• Izinova can cause temporary mild to moderate elevations in uric acid [see section 4.8]. The potential for uric acid elevation should be considered before administering Izinova to patients with history of gouty manifestation or hyperuricaemia (see section 4.8).
Additional information:• Izinova is not for direct ingestion. Direct ingestion of the undiluted solution may increase the risk of nausea, vomiting, dehydration and electrolyte disturbances. Each bottle must be diluted with water and taken with additional water as recommended to ensure patient tolerance. • This medicinal product contains 247.2 mmol (or 5.683 g) sodium per bottle. To be taken into consideration by patients on a controlled sodium diet.• This medicine contains 35.9 mmol (or 1.405 g) potassium per bottle. To be taken into consideration by patients with reduced kidney function or patients on a controlled potassium diet.
PregnancyAnimal reproduction studies have not been conducted with sodium, magnesium and potassium sulphates [see section 5.3]. There are no data from the use of this product in pregnant women. Izinova is not recommended during pregnancy.
Breast-feedingIt is unknown whether Izinova is excreted in human milk. A risk to the newborns/infants cannot be excluded. Breast-feeding should be discontinued during treatment with Izinova until 48 hours after receiving the second dose of Izinova.
FertilityNo fertility data are available.
Summary of the safety profileDiarrhoea is the expected outcome of the bowel cleansing preparation; therefore this occurs after Izinova ingestion. As with any intervention of this type, undesirable effects occur in the majority of patients. The most commonly reported adverse drug reactions from clinical trials and post-marketing experience are discomfort, abdominal distension, abdominal pain, nausea, and vomiting. During clinical trials more patients reported vomiting when Izinova was given as a one-day preparation than when split-dose regimen was followed.
Tabulated summary of adverse reactionsThe frequency of adverse drug reactions to Izinova is classified as follows: Very common (≥1/10); common (≥1/100 to <1/10); uncommon (≥1/1,000 to <1/100), rare (≥1/10,000 to <1/1,000), very rare (< 1/10,000), unknown (cannot be estimated from the available data). The table below lists adverse drug reactions collected from clinical trial data, and includes events experienced by individual patients. Additionally, adverse events reported in post-marketing are included.
|System Organ Class||Frequency||Adverse Drug Reaction|
|Immune System Disorders||Unknown (post-marketing data)||Hypersensitivity (including urticaria, pruritus, rash, erythema, dyspnoea, throat tightness)|
|Nervous System Disorders||Uncommon||Headache, dizziness|
|Gastrointestinal Disorders||Very common||Abdominal distension, abdominal pain, nausea, vomiting|
|Uncommon||Anorectal discomfort, dry mouth|
|Renal and Urinary Disorders||Uncommon||Dysuria|
|General Disorders and Administration Site Conditions||Very common||Discomfort|
|Investigations||Uncommon||Aspartate aminotransferase increased, blood creatine phosphokinase increased, blood lactate dehydrogenase increased, blood phosphorus increased, hyperbilirubinaemia, blood chemistry disturbances including hyponatraemia, hypokalaemia, hypocalcaemia and hyperuricaemia|
Additional information on special populationsTemporary elevations in uric acid have been observed during clinical trials. For patients with history of gouty manifestation or with hyperuricaemia, see section 4.4. No overall differences in safety were observed between the elderly population and the other patients during the clinical development of Izinova [see section 5.1]. However special precautions for use should be taken in elderly patients as for any high-risk population [see section 4.4]. For patients with renal or hepatic impairment, see sections 4.3 and 4.4.
Reporting of suspected adverse reactionsReporting 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: www.mhra.gov.uk/yellowcard
Mechanism of actionIzinova is an osmotic laxative. Its mechanism of action primarily relies on the limited and saturable sulphate active transport process. Saturating the gastrointestinal transport mechanism leaves sulphate in the bowel. The osmotic effect of unabsorbed sulphate causes water to be retained in the bowel and leads to bowel cleansing.
Pharmacodynamic effectsThe osmotic effect of the unabsorbed ions, when ingested with a large volume of water, produces a copious watery diarrhoea. In clinical trials, the mean time until a clear diarrhoea was about 6.3 hours when the doses were separated by 12 hours and about 2.8 hours when they were consumed 1 hour apart.
Clinical efficacy and safetyClinical efficacy of Izinova was demonstrated in two randomised, actively-controlled, multi-centre, investigator-blinded phase III pivotal clinical trials. The primary efficacy analysis was based on the cleansing success or failure rate determined for each subject. For statistical analysis, a bowel cleansing graded either 'good' or 'excellent' was considered 'successful' while those graded either 'poor' or 'fair' were considered 'failures'. Those who did not undergo colonoscopy were considered treatment failures. Results of the studies, which compared Izinova to a 2-litre polyethylene glycol (PEG) plus electrolytes solution, respectively administrated in split-dose regimen (379 patients randomised, 356 patients in the per protocol (PP) population) and in one-day dosing regimen (408 patients randomised, 364 patients in the PP population), show the non-inferiority of Izinova compared to the 2-litre PEG-based product in both dosing regimen conditions regarding primary endpoint: i.e. the rate of bowel cleansing graded either excellent or good of Izinova and the 2-litre PEG-based product was similar (results of PP population):- for the split-dose regimen : 97.2% and 96.1%, for Izinova and the 2-litre PEG-based product respectively [with a CI95% : -2.7 to 4.8 within the predefined margin of 15%] ;- for the one-day regimen : 84% versus 82.9%, for Izinova and the 2-litre PEG-based product respectively [with a CI95% ; -6.5 to 8.8 within the predefined margin of 15%. Adverse events were predominantly gastrointestinal as expected for any bowel cleansing agent; abdominal distension, abdominal pain nausea and vomiting were the most frequent symptoms reported.
Paediatric populationThe European Medicines Agency has waived the obligation to submit the results of studies with Izinova in infants from birth to 6 months old and has deferred the obligation to submit the results of studies with the medicine in the rest of the paediatric population, i.e.: in the sub-sets from 6 months to 17 years old, inclusive [see section 4.2 for information on paediatric use].