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Clinical particulars
Target species
Cattle and sheep.
Indications for use
Indicated for the effective treatment and control of the following parasites of cattle and sheep:
Gastrointestinal Roundworms (Adult, L4 and Inhibited L4)
Ostertagia ostertagi
Gastrointestinal Roundworms (Adult and L4)
Ostertagia lyrata
Cooperia oncophora
Cooperia pectinata
Cooperia punctata
Haemonchus placei
Trichostrongylus axei
Trichostrongylus colubriformis
Bunostomum phlebotomum
Oesophagostomum radiatum
Gastrointestinal Roundworms (Adult)
Strongyloides papillosus
Nematodirus helvetianus
Nematodirus spathiger
Trichuris spp.
Lungworms (Adult and L4)
Dictyocaulus viviparus
Eye Worms (Adult)
Thelazia spp.
Hypoderma bovis
H. lineatum
Mange Mites
Psoroptes ovis
Sarcoptes scabei var. bovis
Sucking Lice
Linognathus vituli
Haematopinus eurysternus
Solenopotes capillatus
The product may also be used as an aid in the control of biting lice (Damalinia bovis) and the mange mite Chorioptes bovis, but complete elimination may not occur.
Persistent Activity Given at the recommended dosage of 1 ml per 50 kg bodyweight, the product controls re-infection with the following nematodes: Barbers pole worm (Haemonchus placei), Small intestinal worm (Cooperia spp.) and Hairworm (Trichostrongylus axei) for 14 days, Brown stomach worm (Ostertagia ostertagi) and Nodular worm (Oesophagostomum radiatum) for 21 days, and Lungworm (Dictyocaulus viviparus) for 28 days after treatment.
The timing of treatment should be based on epidemiological factors and should be customised for each individual farm. A dosing program should be established by a qualified professional person.
Gastrointestinal Roundworms (Adult, L4 and Inhibited L4)
Ostertagia circumcincta
Haemonchus contortus
Gastrointestinal Roundworms (Adult and L4)
Ostertagia trifurcata
Trichostrongylus colubriformis
Cooperia curticei
Oesophagostomum columbianum
Nematodirus filicollis
Chabertia ovina
Gastrointestinal Roundworms (Adult)
Trichostrongylus axei
T. vitrinus
Oesophagostomum venulosum
Trichuris ovis
Lungworms (Adult and L4)
Dictyocaulus filaria
Lungworms (Adult)
Protostrongylus rufescens
Nasal Bots
Oestrus ovis
Mange Mites
Psoroptes ovis
Benzimidazole-resistant strains of Haemonchus contortus and Ostertagia circumcincta are also controlled.
Do not inject intravenously or intramuscularly.
The product is specifically for use in the target species. Do not use in other species as severe adverse reactions, including fatalities in dogs, may occur.
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 bodyweight, 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 macrocyclic lactones (which includes ivermectin) has been reported in Teladorsagia spp. in sheep and in Cooperia spp. in cattle within the EU. Therefore, the use of this product should be based on local (regional, farm) epidemiological information about susceptibility of nematodes and recommendations on how to limit further selection for resistance to anthelmintics.
Special precautions for use in animals
When treating groups of animals use only an automatic dosing device. Syringes must be filled from the vial through a dry sterile draw-off needle that has been placed in the vial stopper. Vial stoppers must not be broached more than 20 times.
Sheep scab (Psoroptes ovis) is an extremely contagious external parasite of sheep. To ensure complete control great care must be taken to avoid re–infestation, as mites may be viable for up to 15 days off the sheep. It is important that all sheep which have been in contact with infected sheep are treated. Contact between treated, infected and untreated flocks must be avoided until at least seven days after treatment.
In sheep, treatment of psoroptic mange (sheep scab) with one injection is not recommended because, although clinical improvement may be seen, elimination of all mites may not occur.
This product does not contain any antimicrobial preservative. Swab septum before removing each dose. Use a sterile needle and syringe.
Special precautions to be taken by the person administering the product to animals
Do not smoke, drink or eat while handling the product. Wash hands after use. Take care to avoid self injection: the product may cause local irritation and/or pain at the site of injection. In case of accidental self-injection, seek medical advice and show the label or package leaflet to the physician.
Adverse reactions
Mild, transient discomfort has occasionally been observed in cattle following subcutaneous administration. A low incidence of soft tissue swelling at the injection site has been observed.
Discomfort, sometimes intense but usually transient, has been observed in some sheep following subcutaneous administration.
In both species these reactions disappear without treatment.
Use during pregnancy, lactation or lay
IVOMEC Classic Injection for Cattle and Sheep can be administered to cows and ewes at any stage of pregnancy or lactation provided that the milk is not intended for human consumption. It can be used in breeding ewes, rams, bulls and cows without affecting fertility. IVOMEC Classic Injection can be given to all ages of animals including young calves and lambs.
IVOMEC Classic Injection for Cattle and Sheep has been used concurrently without adverse effects with foot and mouth disease vaccine or clostridial vaccine, given at separate injection sites. Adequate vaccination of sheep against clostridial infections is strongly recommended.
Amounts to be administered and administration route
IVOMEC Classic Injection for Cattle and Sheep should be given only by subcutaneous injection, using aseptic precautions, at the recommended dosage level of 200 mcg ivermectin per kg bodyweight under the loose skin in front of, or behind, the shoulder in cattle and in the neck in sheep.
To ensure administration of a correct dose, bodyweight should be determined as accurately as possible; accuracy of the dosing device should be checked.
Use this chart as a guide in working out the appropriate dose rate:
Cattle (1 ml/50 kg)
Sheep (0.5 ml/25 kg)
Bodyweight (kg)
Dose Volume (ml)
Bodyweight (kg)
Dose Volume (ml)
Up to 50
Up to 5
For cattle weighing over 400 kg calculate the dose at the rate of 1 ml per 50 kg bodyweight
For sheep weighing over 100 kg calculate the dose at the rate of 0.5 ml per 25 kg.
When treating sheep of less than 16 kg, seek veterinary advice regarding the use of 1 ml disposable syringes graduated in increments of 0.1 ml. For the treatment of individual sheep, a syringe not exceeding 2.0 ml and calibrated in increments of 0.1 ml should be used.
Each ml contains 10 mg of ivermectin sufficient to treat 50 kg of bodyweight of cattle and sheep. The injection may be given with any standard automatic or single-dose or hypodermic syringe. Use of a sterile 17 gauge x ½ inch needle is suggested. Replace with a fresh sterile needle after every 10 to 12 animals. Injection of wet or dirty animals is not recommended.
For the treatment and control of sheep scab, two injections with a seven day interval are required to treat clinical signs and to eliminate mites.
Single doses of 4 mg ivermectin per kg (20 x the use level) given subcutaneously resulted in ataxia and depression. No antidote has been identified, however, symptomatic therapy may be beneficial.
Dose levels up to 4 mg ivermectin per kg (20 x the use level), given subcutaneously, resulted in ataxia and depression.
Withdrawal periods
Cattle (meat & offal): 49 days.
Cattle (milk): Do not use in cattle producing milk for human consumption. Do not use in non-lactating dairy cows, including pregnant heifers, within 60 days of calving.
Sheep (meat & offal): 37 days.
Sheep (milk): Do not use in sheep producing milk for human consumption.