Startect Dual Active Oral Solution for Sheep
Active ingredients: Abamectin, Derquantel
Form
Liquid
Species
Manufacturer
Zoetis UK Limited
VMD MA No.
42058/5099
What it's used for
Startect Dual Active is a broad spectrum anthelmintic for the treatment and control of mixed gastro-intestinal nematode infections and associated diseases...
Full indications, dosage and side effects ↓The prescription itself has a price. See what practices near you charge for a consultation and the written prescription fee.
Paying less for Abamectin + Derquantel
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1
Ask your vet for a written prescription
They must provide one on request. Under the CMA Order the fee is capped at £21 from 2027.
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2
Fill it at a registered online retailer
The CMA found online pharmacies 50–60% cheaper than practice dispensing on common medicines — typically £200–£300 a year.
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Prescription required
Your vet must provide a written prescription on request. You can then purchase from any licensed online retailer.
Startect Dual Active Oral Solution for Sheep — SPC Details
Source: VMD Summary of Product Characteristics (SPC). Last updated 27 Mar 2026.
mixed gastro-intestinal nematode infections and associated diseases of sheep. The
spectrum of activity is as follows:
Adult and Immature Gastro-intestinal Nematodes:
Haemonchus contortus (including inhibited larval stages)
Teladorsagia (Ostertagia) circumcincta (including inhibited larval stages)
Teladorsagia (Ostertagia) trifurcata
Trichostrongylus axei
Trichostrongylus colubriformis
Trichostrongylus vitrinus
Cooperia curticei
Cooperia oncophora
Nematodirus spathiger
Nematodirus filicollis
Nematodirus battus
Strongyloides papillosus
Revised May 2024
AN: 02616/2023Page 2 of 7
Oesophagostomum venulosum (adult)
Trichuris ovis
Chabertia ovina
Lungworms:
Dictyocaulus filaria (adult)
This product is effective against strains of parasites resistant to benzimidazoles,
levamisole, macrocyclic lactones, and combinations of these.
Do not use in dogs as severe adverse reactions may occur.
Do not use in cases of hypersensitivity to the active substances or to any of the
excipients.
Do not exceed the recommended dose rate.
Very common
(>1 animal / 10 animals treated):
coughing
1
Mild transient.
Reporting adverse events is important. It allows continuous safety monitoring of a
veterinary medicinal product. Reports should be sent, preferably via a veterinarian, to
either the marketing authorisation holder or the national competent authority via the
national reporting system. See also the last section of the package leaflet for
respective contact details.
of development of resistance and could ultimately result in ineffective therapy:
•
misadministration of the product or lack of calibration of the dosing device.
•
extended period of time.
Assess bodyweight as accurately as possible before calculating dosage. Suspected
clinical cases of resistance should be further investigated using the 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.
i) Special precautions for use in animals
The recommended dose of Startect Dual Active is 0.2 ml/kg; doses of 0.9 ml/kg and
higher (4.5X the recommended dose) can cause signs of toxicity and may lead to
fatalities.
If animals are batched for dosing it is very important that careful consideration be
given to the weight range within each group, to avoid the risk of overdosing smaller
animals. A representative sample of animals should be weighed before treatment.
Accuracy and proper functioning of the dosage device should be checked.
The safety of Startect Dual Active has not been established in sheep under six weeks
of age or weighing less than 10 kg.
ii) Special precautions to be taken by the person administering the veterinary
medicinal product to animals
Do not eat, smoke or drink while handling the product.
Revised May 2024
AN: 02616/2023Page 3 of 7
Personal protective equipment consisting of impermeable rubber gloves should be
worn when handling the veterinary medicinal product.
Avoid ingestion, inhalation and eye and skin contact. Wash hands after handling the
product. In case of accidental ingestion, seek medical advice immediately and show
the package leaflet or the label to the physician.
In case of accidental eye or skin contact, wash affected areas immediately with clean
running water and seek medical attention if irritation persists.
•
The product is toxic to dung insects. It is excreted mainly in faeces and it cannot be
excluded that insects using dung excreted after treatment may be adversely affected.
Using the product strictly in accordance with the SPC will keep this risk to a minimum.
Milk: Not authorised for use in animals producing milk for human consumption.
5.
This information is sourced from the official Summary of Product Characteristics (SPC) published by the Veterinary Medicines Directorate (VMD). It is provided for informational purposes only and does not replace professional veterinary advice. Always consult your vet before administering any medication.
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Other Products Containing Abamectin
These products share the same active ingredient and may be suitable alternatives. Always consult your vet.
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