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Solantel 50mg/ml Oral Suspension for Sheep

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1 ml contains:
Closantel 50.0 mg


For the treatment of chronic and subacute fasciolosis (due to Fasciola hepatica). The product is effective against mature and late immature flukes (from 5 weeks immature).
For the treatment of Oestrus ovis (Sheep Nasal Bot Fly).
For the treatment of inhibited, L4 and adult stages of Haemonchus contortus ('barber's pole' worm).

Dosage & Administration

Give orally as a drench.

10 mg of closantel per kg bodyweight (i.e. 1 ml of product per 5 kg bodyweight).
For example:

Up to 5 kg.................1 ml
10 kg........................2 ml
20 kg........................4 ml
30 kg........................6 ml
40 kg........................8 ml
50 kg........................10 ml
60 kg........................12 ml
70 kg........................14 ml
80 kg........................16 ml

To ensure administration of a correct dose, bodyweight should be determined as accurately as possible; accuracy of the dosing device should be checked. If animals are to be treated collectively rather than individually, they should be grouped according to their body weight and dosed accordingly in order to avoid under- or over-dosing.

The timing for treatment should be based on epidemiological factors and should be customised for each individual farm. As with other anthelmintics, veterinary advice should be sought on appropriate dosing programmes and stock management to achieve adequate parasite control and reduce the likelihood of resistance developing.

Suitable for use with most types of standard drenching equipment.

Shake well before use.

Withdrawal Period

Meat and offal: 42 days

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.

Contraindictions, Warnings etc

Do not use in animals with known hypersensitivity to the active substance or to any of the excipients.

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 closantel has been reported in Haemonchus species outside the EU. 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.

Pharmaceutical Precautions

i. Special precautions for use in animals

When using a drenching gun, take care not to injure the mouth or pharynx.
Do not exceed the stated dose.

The product can be used in all age groups of sheep and lambs.

ii. Special precautions to be taken by the person administering the veterinary medicinal product to animals

This product may be irritating to skin and eyes and users should be careful not to accidentally splash it on themselves or others.

Wear nitrile rubber gloves when applying the product.

In case of accidental spillage onto skin or into eyes, rinse the affected area with large amounts of clean water. If irritation persists, seek medical advice immediately and show the package leaflet or label to the physician.

Wash hands after use.

Do not eat, drink or smoke while handling the product.

iii. Other precautions

Closantel is very toxic to dung fauna.

The risk to dung fauna can be reduced by avoiding too frequent and repeated use of closantel (and products of the same anthelmintic class) in sheep and lambs. Animals should not normally be treated in excess of three times a year with closantel.


Closantel may affect aquatic organisms. Do not contaminate ponds, waterways or ditches with the product or empty containers.

Any unused veterinary medicinal product or waste materials derived from such veterinary medicinal products should be disposed of in accordance with local requirements.

Further Information

Click here to download the SPC

Please note: Product information presented on this website is intended only as a brief summary of Norbrook products for your convenience. Not all products or indications are licensed in every country and may be subject to further local variations. For specific product information you should always consult a healthcare professional from your region. Please see our terms and conditions for further information.

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