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Release 2.46
Fasinex 5% w/v Oral Suspension
Species: Sheep
Therapeutic indication: Pharmaceuticals: Endoparasiticides: Flukicides
Active ingredient: Triclabendazole
Product:Fasinex 5% w/v Oral Suspension
Product index: Fasinex 5% w/v Oral Suspension
Sheep - meat: 56 days
Withdrawal notes: Not authorised for use in ewes producing milk for human consumption including during the dry period. Do not use within 1 year prior to the first lambing in ewes intended to produce milk for human consumption.
Qualitative and quantitative composition
Active substance:
Triclabendazole 5.00 % w/v
Methyl parahydroxybenzoate 0.11 % w/v
Propyl parahydroxybenzoate 0.024 % w/v
Benzoic acid 0.10 % w/v as antimicrobial preservatives
For a full list of excipients, see Pharmaceutical particulars.
Pharmaceutical form
Oral suspension.
White to cream-coloured suspension.
Clinical particulars
Target species
Indications for use, specifying the target species
For the treatment and control of liver fluke infections in sheep caused by all stages of triclabendazole susceptible Fasciola hepatica from 2 day old immature to adult fluke.
Special warnings for each target species
Care should be taken to avoid the following practices because they increase the risk of development of resistance and could ultimately result in ineffective therapy:
∙ Too frequent and repeated use of anthelmintics from the same class, over an extended period of time
∙ Underdosing which may be due to underestimation of body weight, misadministration of the product or lack of calibration of the dosing device (if any).
Suspected clinical cases of resistance to anthelmintics should be further investigated using appropriate tests (e.g. Faecal Egg Count Reduction Test). Where the results of the test(s) strongly suggest resistance to a particular anthelmintic, an anthelmintic belonging to another pharmacological class and having a different mode of action should be used.
Resistance to triclabendazole has been reported in Fasciola species in small ruminants in a number of countries including the EU. Therefore the use of this product should be based on local (regional, farm) epidemiological information about susceptibility of trematodes and recommendations on how to limit further selection for resistance to anthelmintics.
Special precautions for use
i. Special precautions for use in animals
Assess bodyweight as accurately as possible before calculating dose. Shake the container thoroughly before use. Clean drenching equipment before and after use. Use unaltered product from the original container.
Parasite resistance to a particular class of anthelmintic may develop following frequent repeated use or misuse of an anthelmintic of that class. To reduce this risk, dosing programmes should be discussed with your Veterinary Adviser. Efficacy of this product against liver fluke is reduced if triclabendazole-resistant strains are present. If lack of efficacy is suspected seek veterinary advice.
ii. Special precautions to be taken by the person administering the veterinary medicinal product to animals
When using, do not eat, drink or smoke. Wash splashes from eyes and skin immediately. Take off immediately any contaminated clothing. Wash hands and exposed skin before meals and after work.
Adverse reactions (frequency and seriousness)
Use during pregnancy, lactation or lay
The product can be used in pregnant ewes not producing milk for human consumption. Not authorised for use in ewes producing milk for human consumption including during the dry period.
Interaction with other medicinal products and other forms of interaction
None known.
Amounts to be administered and administration route
For oral administration. Dose: 10mg triclabendazole /kg bodyweight. (1ml Fasinex 5% per 5kg bodyweight).
Do not mix with other products. To ensure administration of a correct dose, body weight should be determined as accurately as possible; accuracy of the dosing device should be checked.
Most types of automatic drenching guns may be used.
Do not mix with other products before administration except if premixing is done by a veterinary surgeon or a pharmacist.
Treatment of acute outbreaks: The flock should be treated immediately after diagnosis is reached. Veterinary advice should be sought for subsequent dosing intervals.
Overdose (symptoms, emergency procedures, antidotes), if necessary
No treatment specified.
Withdrawal period(s)
Animals must not be slaughtered for human consumption during treatment. Sheep may be slaughtered for human consumption only after 56 days from the last treatment.
Not authorised for use in ewes producing milk for human consumption including during the dry period.
Do not use within 1 year prior to the first lambing in ewes intended to produce milk for human consumption.
Pharmacological particulars
Pharmacotherapeutic group: Antiparasitic products, insecticides and repellents; Triclabendazole
ATC vet code: QP52 AC01
Pharmacodynamic properties
Triclabendazole is a flukicide.
Pharmacokinetic particulars
Majority of oral dose in rats, sheep, goats and rabbits is eliminated in faeces after 6-10 days, as unchanged drug or products of biliary excretion. Urinary excretion is minimal. Sulphone, sulphoxide, ketone and 4-hydroxy triclabendazole derivatives are the main metabolites identified in plasma.
Pharmaceutical particulars
List of excipients
Methyl parahydroxybenzoate
Propyl parahydroxybenzoate
Benzoic acid
Povidone K30
Cellulose microcrystalline and Sodium croscarmellose (11% Sodium croscarmellose)
Disodium hydrogen phosphate dodecahydrate
Water purified
None known
Shelf life
Shelf life of veterinary medicinal product as packaged for sale: 5 years
Special precautions for storage
Protect from light. Protect from freezing. Do not store above 25°C.
Store in tightly closed original container.
Nature and composition of immediate packaging
Packs of 0.8, 2.2 or 5L in white HDPE bottles, blue polypropylene closure.
Packs of 12 or 21L in white HDPE bottles, blue HDPE closure.
Most types of drenching gun can be used.
Special precautions for the disposal of unused veterinary medicinal product or waste materials derived from the use of such products
Do not contaminate ponds, waterways or ditches with the product or used container. Any unused veterinary medicinal product or waste materials derived from such veterinary medicinal products should be disposed of in accordance with local requirements.
Marketing Authorisation Holder (if different from distributor)
Marketing Authorisation Number
Vm 00879/4007
Significant changes
Date of the first authorisation or date of renewal
24 January 1984
Date of revision of the text
December 2015
Any other information
Legal category
Legal category: POM-VPS
GTIN description:Fasinex 5% 2.2L
GTIN description:Fasinex 5% 5L