CYDECTIN LONG ACTING INJECTION FOR SHEEP 500ML VIRBAC SMLA500W
- Active ingredient
- Moxidectin
- Controls
- Host: Sheep. Target: Internal and external parasites
- Suitable for
- Sheep
- Withholding period
- Refer to the current registered product label for withholding periods. — always confirm on the registered label
For the treatment and control of roundworms, nasal bot and itchmite in sheep.
For protection against severe challenge by Haemonchus contortus (barber’s pole worm) for up to 4 months.
Features:
Contains moxidectin – the most potent macrocyclic lactone (ML)
No less than 91 days persistent activity against barber’s pole worm and small brown stomach worm
Up to 49 days persistent activity against black scour worm
Up to 4 months protection against severe challenge by barber’s pole worm
Recommended for highly contaminated pastures
Recommended For:
Ideal for use where paddock larval burdens are high, or where animal immunity levels are expected to be low (e.g. lactating ewes and merino weaners).
For improved sustainability use Cydectin Long Acting Injection For Sheep concurrently with a drench from another chemical group.
Why Choose Cydectin Long Acting Injection for Sheep:
Control of internal parasites:
Moxidectin is the most potent member of the macrocyclic lactone (ML) family of drenches, meaning it can kill worms resistant to ivermectin and abamectin.
Broad spectrum parasite control:
Cydectin Long Acting is highly effective against all major internal parasites that are susceptible to an ML drench, including gastrointestinal roundworms and large lungworm.
These worms reduce overall productivity, especially in young animals. Weight gains and wool growth can be reduced significantly.
Cydectin Long Acting also controls itch mite and nasal bots.
Longer acting worm control:
Cydectin Long Acting controls barber’s pole worm and small brown stomach worm for at least 91 days, and black scour worm for up to 49 days.
It also protects against severe challenge from barber’s pole worm for up to 4 months. Good worm control means cleaner sheep, less pasture contamination and increased productivity
Less drenching:
Cydectin Long Acting long duration of activity can mean less drenching and may help reduce the development of resistance.
Ease of application:
Cydectin Long Acting is delivered by a simple, subcutaneous injection.
Safety:
Cydectin Long Acting has a wide margin of safety when used as recommended.
Withholding Period /ESI
Meat: 91 days
Milk: Do not use in female sheep which are producing, or may in the future produce, milk or milk products for human consumption
ESI: 133 days
Active Composition:
Moxidectin 20g/L
Active Ingredient: Moxidectin
Chemical Schedule: S5
APVMA Reg. No: 58532
For use on: Sheep
Refer to the current registered product label for withholding periods.
Always read the current registered product label before use. Withholding periods must be observed before slaughter, milking, or egg collection. The label supplied with the product is the legal document and takes precedence. If in doubt, contact TGRM on (07) 5482 1692 or the manufacturer directly.
Dose rate & administration
1 mL per 10 kg by subcutaneous (SC) injection on the side of the neck, approximately 5 cm from the base of the ear. Do not re-treat for at least 91 days. Do not use in ewes producing milk for human consumption. Minimum bodyweight 10 kg.
| Liveweight (kg) | Dose (mL) | Head/500 mL | Liveweight (kg) | Dose (mL) | Head/500 mL |
|---|---|---|---|---|---|
| 20 | 2.0 | 250 | 50 | 5.0 | 100 |
| 30 | 3.0 | 166 | 60 | 6.0 | 83 |
| 40 | 4.0 | 125 | 70 | 7.0 | 71 |
| 50 | 5.0 | 100 | 80+ | 1 mL/10 kg | — |
- Weigh animals before treatment — never estimate liveweight.
- Dose to the heaviest animal in the mob. Do not underdose.
- Inject at 45° in short-wool sheep, at 90° in long-wool sheep.
- Store below 25°C, protected from light.
Withholding period
Meat: 91 days. Wool: Nil. ESI: 133 days — confirm current ESI from Virbac before slaughter for export. Do not use in ewes producing or likely to produce milk for human consumption.
Always read the current registered product label before use. Dose rates and withholding periods on this page are provided as a guide only. The registered label supplied with the product is the legal document and takes precedence. If in doubt, contact TGRM on (07) 5482 1692 or the manufacturer directly.
Tips for Best Results
- Weigh animals accurately — never estimate liveweight. Underdosing is a leading driver of drench resistance in sheep flocks. Dose the entire mob to the weight of the heaviest animal.
- Macrocyclic Lactone (ML) resistance awareness — while moxidectin is the most potent ML and can kill worms resistant to ivermectin and abamectin, ML resistance in barber's pole worm is present and spreading in Queensland. Use a combination drench or concurrent drench from another chemical group (e.g. a BZ or LEV) to reduce selection pressure, as recommended by WormBoss.
- Preserve refugia — WormBoss advises leaving a proportion of the mob undrenched (low-risk animals) where possible, to maintain a population of worms in refugia not exposed to the drench. This slows the development of resistance across the flock.
- Target high-risk mobs first — this product is particularly suited to lactating ewes and merino weaners, and highly contaminated pastures where larval burdens are expected to be elevated.
- Storage — store as directed on the label, away from direct sunlight and out of reach of children. Record the batch number, date of treatment, number of animals treated, and mob details for your flock health records and withholding period compliance.
Always read the label and follow directions for use. The registered label is the legal document governing use of this product.
Download the Safety Data Sheet for this product:
Download SDS (PDF)Required for safe handling and storage. Keep on-site per WHS regulations.
Common Questions
What parasites does Cydectin Long Acting Injection control in sheep?
Cydectin Long Acting Injection is registered for the treatment and control of roundworms, nasal bot and itchmite in sheep. It is highly effective against major internal parasites including gastrointestinal roundworms, large lungworm, barber's pole worm, small brown stomach worm and black scour worm.
How long does the protection last?
Cydectin Long Acting provides persistent activity against barber's pole worm and small brown stomach worm for at least 91 days, and against black scour worm for up to 49 days. It also offers protection against severe challenge by barber's pole worm for up to 4 months. Always refer to the product label for full details on duration of protection for all parasites.
Is Cydectin Long Acting suitable for my sheep in high-parasite paddocks?
Yes, Cydectin Long Acting Injection is recommended for highly contaminated pastures and is ideal where paddock larval burdens are high or where animal immunity levels are expected to be low—such as in lactating ewes and merino weaners. For improved sustainability, use it concurrently with a drench from another chemical group. Discuss your specific situation with a vet or agronomist to confirm it's right for your flock.
What is the withholding period?
The meat withholding period is 91 days. Do not use Cydectin Long Acting Injection in female sheep which are producing, or may in the future produce, milk or milk products for human consumption. Always check the product label for the complete withholding period and export slaughter interval (ESI) information before use.
Where can I find the full dosing and safety information?
The product label and Safety Data Sheet (SDS) contain essential information on correct application, dosage and safety directions. Please read these carefully before use. If you have any questions about how to use Cydectin Long Acting Injection safely and effectively, contact TGRM on (07) 5482 1692, visit us at 55 Tozer St, Gympie, or consult your veterinarian or livestock agronomist.
Do you ship this product Australia-wide?
Yes, this product ships Australia-wide via road courier. It is too large or heavy for Australia Post. Call us on (07) 5482 1692 if you have any questions about delivery to your area.
Can I Click & Collect from Gympie?
Yes — Click & Collect is available from our store at 55 Tozer St, Gympie. Open Mon–Fri 8am–5pm and Sat 8am–12pm. Click & Collect is FREE on orders of $175 or more, or a flat $10 on orders under $175. Select Click & Collect at checkout and we will have your order ready.


