Dectomax Injectable Endectocide

Dectomax is a long-acting, doramectin injectable endectocide for cattle designed for beef producers, dairy farmers (dry stock and bulls), and cattle managers seeking persistent parasite control. It controls the full spectrum of internal and external parasites commonly found in Australia, including worms, lice, and cattle ticks, with up to 28 days of protection.

As an injectable formulation, Dectomax is highly reliable and consistent, bypassing absorption barriers and weather conditions. Its formula is tissue-friendly and oil-based, minimising discomfort at the injection site whilst delivering proven performance. Dectomax Injectable Endectocide can be used on cattle of all ages, including young calves, pregnant cows, and bulls. Studies also show Dectomax-treated cattle gain an extra 24kg over 140 days compared to untreated animals, translating to improved profitability.

Active Ingredient: Doramectin @ 10.0g/L

Comparable to: Doramate Injectable Drench (Troy)

Pack sizes: 500mL, 2.5L (5 x 500mL packs; includes a 10mL metal applicator). 

Registrant: Zoetis Australia Pty Ltd (APVMA #46128/1200) 

Click For Technical Info & Tips For Use
5 out of 5 (2 customers reviews)

QuantityDiscountStatus
4 - 8$265.00 eachAvailable
9 or more$255.00 eachAvailable
2 or more$1,300.00 eachAvailable
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This item is large and requires a courier! Ensure a courier can reach your address.
Don’t worry, shipping is STILL FREE!
Click here for shipping info or give us a call.

Ordering multiple large items? They will be shipped on a skid or pallet to ensure that your items arrive safely and securely. The delivery truck will need to be unloaded with a forklift. If you do not have a forklift, please provide an address where a forklift is present.

Dectomax Injectable Endectocide DECTOMAX-INJ Zoetis

Description

How Dectomax Injectable Endectocide works

Dectomax contains doramectin, a second-generation avermectin chemical with unique properties that extend its activity beyond other macrocyclic lactones. This means doramectin is able to stay active longer in the animal’s system, providing extended protection of up to 28 days against lungworm, and 21 days against major gastrointestinal worms.

Which parasites does Dectomax Injectable Endectocide control? 

Dectomax is approved for the treatment of internal and external parasites in cattle, including beef cattle, pregnant cows, newborn calves, and bulls. Parasitic species Dectomax controls include: 

Gastrointestinal roundworms (adults and fourth-stage larvae)

  • Barber’s pole worm (Haemonchus placei) 
  • Black scour worm (Trichostrongylus colubriformis, Trichostrongylus longispicularis [adults only]) 
  • Hookworm (Bunostomum phlebotomum)
  • Nodule worm (Oesophagostomum radiatum)
  • Roundworm (Toxocara vitulorum) [adults only] 
  • Small brown stomach worm, including inhibited larvae (Ostertagia ostertagi [O. lyrata]) 
  • Small intestinal worm (Cooperia oncophora [C. surnabada / C. mcmasteri], Cooperia punctata, Cooperia pectinata)
  • Stomach hair worm (Tricostrongylus axei)

Other major parasites

  • Biting lice (Bovicola bovis) [aids in control only] 
  • Lungworm (Dictyocaulus viviparus) [adults and immature]
  • Mange mites (Psoroptes bovis, Sarcoptes scabiei var bovis [not present in Australia])
  • Sucking lice (Haematopinus eurysternus, Linognathus vituli, Solenopotes capillatus)

Always consult your veterinarian for assistance with diagnosing, treating, and controlling parasites.

Persistent protection periods when using Dectomax Injectable Endectocide

Dectomax injectable drench for cattle offers the following protection periods when utilised in accordance with label instructions:

Parasite species Duration of persistent protection
Barber’s pole worm (Haemonchus placei) Up to 21 days
Hookworm (Bunostomum phlebotomum) Up to 21 days
Lungworm (Dictyocaulus viviparus) Up to 28 days
Nodule worm (Oesophagostomum radiatum) Up to 21 days
Small brown stomach worm (Ostertagia ostertagi) Up to 21 days
Small intestinal worm (Cooperia oncophora [C. surnabada / C. mcmasteri], Cooperia punctata, Cooperia pectinata) Up to 14 days (Cooperia oncophora) and 21 days (Cooperia spp.)
Stomach hair worm (Trichostrongylus axei) Up to 21 days

What is the dosage rate for Dectomax Injectable Endectocide? 

In cattle, the dosage rate for Dectomax is 1mL per every 50kg of body weight. It is administered via subcutaneous injection.

Why choose injectable cattle drenches over pour-ons?

Unlike pour-ons that must penetrate the skin and can be affected by dust, rain, or coat condition, Dectomax Injectable delivers doramectin directly into the bloodstream via subcutaneous injection. This ensures higher blood drug concentrations and more consistent parasite control regardless of environmental conditions.

This makes Dectomax an extremely worthwhile choice for producers, especially in tough conditions or where consistent results matter. If you’ve ever been disappointed by pour-on performance, switching to injectable treatments often pays for itself via better results.

How does Dectomax compare to ivermectin or moxidectin injectables?

The active ingredient in Dectomax, doramectin, offers longer persistent activity than ivermectin, which typically sits around 14 days, and comparable or slightly longer protection than moxidectin against most parasites. Its unique chemical structure gives doramectin extended retention in an animal’s tissue. Dectomax also provides up to 28 days of protection against lungworm, which is longer than most alternatives on the market, including ivermectin and moxidectin formulations.

Is Dectomax’s injectable formulation harder to use than a pour-on treatment?

While injecting your cattle drench does require proper restraints and a good injection technique, many producers prefer it for reliability. The tissue-friendly formulation makes injection easier, and Dectomax’s protective polycarbonate bottle shield with eye hook provides practicality for yard use. The 2.5L value pack also includes a metal applicator to make the job even simpler. 

What is the safety margin of Dectomax doramectin injectable cattle drench?

During extensive field trials, Dectomax was proven to have a wide safety margin when administered to cattle of all ages. It has also been specifically formulated to minimise the risk of injection site pain after administration.

Can I use Dectomax on young calves?

Yes. Dectomax has a wide safety margin and has been proven safe for young calves, as well as pregnant cows and bulls. Always dose according to body weight to ensure efficacy and safety. 

Will Dectomax help cattle gain weight?

Yes – according to field studies, Dectomax-treated cattle gained 24kg more than untreated cattle over a 140-day period. This is because effective parasite control ensures more nutrients penetrate the cow’s muscle and frame, instead of feeding worms.

Is Dectomax safe on dung beetles? 

When used according to label instructions, Dectomax Injectable Endectocide is unlikely to have unintended environmental consequences, including on dung beetle populations. Increased mortality and impaired development of larvae may occur, but only for a limited period following treatment.

Features & Benefits

Dectomax Injectable Endectocide is a top choice for injectable formulas amongst producers, farmers, and cattle managers in need of long-acting cattle parasite control. Its benefits include:  

  • Targeted worm control: Dectomax delivers consistent and persistent activity against Cooperia, Ostertagia, and Haemonchus, three of the most prevalent and damaging internal parasites in Australian cattle.
  • Proven weight gain advantage: Treated cattle have demonstrated an additional 24kg of weight gain over 140 days compared to untreated animals, translating to measurable productivity gains.
  • Comprehensive parasite coverage: A single treatment controls a broader range of profitability-impacting internal and external parasites than many alternatives on the Australian market.
  • Extended protection: Long-lasting activity helps keep pastures cleaner for longer, reducing the need for frequent retreatments and lowering labour inputs.
  • Tissue-friendly formulation: The oil-based, tissue-friendly formulation supports smoother administration and reduces irritation compared to alternatives.
  • Wide safety margin: Dectomax Injectable Endectocide is suitable for use across all cattle life stages, including young calves, pregnant cows, and bulls, when used according to label directions.

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2 reviews

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What others are saying

  1. Karen Nemec

    Karen Nemec (verified owner)

    Use to combat paralysis ticks. Good product, well priced and speedy delivery

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  2. Linda Grinter

    Dectomax Injection

    Linda Grinter (verified owner)

    Ordered, price+++, arrived in good timing, Thankyou

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Directions Of Use

Click here for Dectomax Injectable Endectocide Directions for Use

Dosage and Administration:

Cattle – 1mL per 50kg bodyweight subcutaneously.

  • Administer under the skin into the neck region and preferable high up behind the ear. 
  • Dose rate to be based on the heavies cattle in each group (bulls, cows, steers, calves etc). 
  • Do not undedose.
  • Where there is a large variation in size within the group, draft into two or more lines based on bodyweight, to avoid excess overdosing.
  • Treatment of very young animals (less than 40kg bodyweight) is generally not warranted.

Dose Table – Cattle

Bodyweight (kg) Dose (mL) Bodyweight (kg) Dose (mL)

40 – 50

1 301 – 350 7
51 – 75 1.5 351 – 400

8

76 – 100

2 401 – 450 9
101 – 150 3 451 – 500

10

151 – 200

4 501 – 550 11
201 – 250 5 551 – 600

12

251 – 300

6 601 – 650

13

Cattle heavier than 650kg should be dosed at 1mL per 50kg bodyweight


Pigs – 1ml per 33kg bodyweight intramuscular.  

Administer into the neck region, preferably high up behind the ear.  A single treatment of 0.3mL per 10kg bodyweight (1mL per 33 kg) should be given.

Dose Table – Pigs

Bodyweight (kg) Dose (mL)

5 – 7

0.2
8 – 10

0.3

11 – 13

0.4
14 – 16

0.5

Pigs heavier than 16kg should be dosed at 0.3mL per 10kg bodyweight

Injections should be given using 16- to 18-gauge needles, regardless of administration route. Needles (12-18mm) in length are suggested for SC injections.


Treatments per Pack:

Cattle:

Animal Weight (kg) Treatments per 500mL

50

500
100

250

150

166
200

125

250

100
300

83

350

71
400

62

450

55
500

50

550

45
600

42

650

38

Pigs:

Animal Weight (kg) Treatments per 500mL

33

500
66

250

99

166
132

125

165

100
198

83

231

71
264

62

297

55
330

50

360

45

Rates are a general guide only. Before opening, carefully read Dectomax Injectable Endectocide Directions for Use, Precautionary and Protection Statements, Storage and Disposal, Safety Directions and First Aid Instructions. The product is designed for the particular purpose indicated on the label. Failure to use the product strictly as directed may be illegal, dangerous and render the product ineffective.

Questions and answers from customers

    Does the Dectomax Injectable Endectocide 2.5 litre package option include an injection gun?

  1. Q Does the Dectomax Injectable Endectocide 2.5 litre package option include an injection gun?
    Asked by Laura on September 24, 2025 11:22 pm
    A

    The Dectomax Injectable Endectocide 2.5L Value Pack includes 5 x Dectomax Injectable Endectocide 500mL, and a free Dectomax 10mL metal applicator.

  2. Can Dectomax Injectable Endoctocide be used on a cow with a calf? As it says not to use on lactating animals.

  3. Q Can Dectomax Injectable Endoctocide be used on a cow with a calf? As it says not to use on lactat...... Read more
    Asked by Geoff on September 11, 2025 8:04 am
    A

    The warning on the Dectomax Injectable Endoctocide label regarding lactating animals specifically applies to cows whose milk is intended for human consumption. Therefore, if the cow is only suckling her calf, it is safe to use the product, as the label also confirms a wide safety margin for young calves. However, if her milk is being collected for human use, you cannot use this product.

  4. Does Dectomax Injectable control liver fluke in cattle?

  5. Q Does Dectomax Injectable control liver fluke in cattle?
    Asked by Brenda on May 1, 2024 8:25 am
    A

    Dectomax Injectable Endectocide  is not registered or recommended for the control of liver fluke in cattle. We have a range of products for the control of liver fluke in cattle. These are easily found under 'Shop Our Range', selecting the  category 'Animal Health'; 'Cattle Products',  then 'Liver Fluke Control'.

  6. Are there any side effects on unborn calves or abortion rates for Dectomax Injectable?

  7. Q Are there any side effects on unborn calves or abortion rates for Dectomax Injectable?
    Asked by Matt on August 13, 2023 7:44 am
    A

    Dectomax Injectable Endectocide is approved for use in beef cattle, including pregnant cows, newborn calves and bulls.  

  8. What impact does Dectomax Injectable Endectocide have on dung beetles?

  9. Q What impact does Dectomax Injectable Endectocide have on dung beetles?
    Asked by David on August 28, 2022 8:44 pm
    A

    When used according to label instructions, Dectomax Injectable Endectocide (Doramectin) is not likely to have an unintended effect that is harmful to the environment or have an overall adverse impact on dung beetle populations.  Increased mortality and impaired development of larvae may be expected, but for a limited period after treatment

  10. Does Dectomax Injectable Endectocide when injected into a cow also protect the suckling calf?

  11. Q Does Dectomax Injectable Endectocide when injected into a cow also protect the suckling calf?
    Asked by Ged on August 21, 2022 12:09 pm
    Answered by the admin

    When Dectomax Injectable is administered to a cow with a suckling calf at foot, the calf will receive the beneficial effects of the Dectomax via the mother's milk whilst suckling.

Send me a notification for each new answer.

Disclaimer: This information and product advice is not intended to be advice or recommendations for any specific use or circumstance. You should seek specialist advice before using any product. Always follow the manufacturer’s guidelines. Specialist Sales liability is limited.

Host & Pest

Host Pest
Host & Pest
Cattle Barber's Pole Worm - Haemonchus Placei, Black Scour Worm - Trichostrongylus Spp., Cattle Biting Louse, Cattle Tick, Chorioptic Mange Mite, Cooperia Oncophora, Cooperia Punctata, Hookworm - Bunostomum Phlebotomum, Large Roundworm - Toxocara Vitulorum, Longnosed Cattle Louse, Lungworm - Dictyocaulus Viviparus, Mange Mite - S. Scabiei Var. Bovis, Nodule Worm - Oesophagostomum Radiatum, Shortnosed Cattle Louse, Small Brown Stomach Worm - O. Ostertagi, Small Intestinal Worm - Cooperia Spp., Stomach Hair Worm, Sucking Louse, Trichostrongylus Longispicularis, Tubercle-bearing Louse
Pigs Hyostrongylus Rubidus, Intestinal Threadworm-strongyloides Spp., Kidney Worm, Large Intestinal Roundworm - A. Suum, Lungworm - Metastrongylus Spp., Nodule Worm - Oesophagostomum Spp., Nodule Worm - Oesophagostomun Dentatum, Sarcoptic Mange Scabies Mite, Sucking Louse, Whipworm - Trichuris Suis

Tips For Use

Administration:

  • Administer Dectomax injectable solution at the recommended dosage of 1mL (10mg doramectin) per 50kg body weight by subcutaneous injection. 
  • Injections should be given using 16- to 18-gauge needles, regardless of the administration route. Needles (12-18mm) in length are suggested for SC injections, which should be given under the loose skin in front of or behind the shoulder.
  • Use contents within 28 days of the first broaching of the vial.
  • Store upright.
  • Discard the unused portion.

Restraints:

  • Do not use in cattle during lactation or less than 60 days before calving when mil or mil products are to be used for human consumption or processing.
  • Retreatment Interval – Do not use in animals within 28 days (4 weeks) of a previous treatment

Precautions:

  • To avoid tissue residues, estimate the weights and dosages in young animals.

Cattle Tick Control:

  • The persistence of doramectin prevents the development of viable cattle ticks for a period of 28 days following treatment.
  • However, engorged female ticks that drop off for up to 3 days after treatment may lay viable eggs and this should be taken into account when planning a strategic tick control program.
  • If presenting cattle for clearance to tick-free areas, consult your local tick advisory authority before use.

Protection of Fish, Crustaceans and the Environment:

  • Doramectin is extremely toxic to aquatic species.
  • Do not contaminate dams, rivers, streams or other waterways with the chemical or used container.

Dectomax Injectable & Dung Beetles;

  • When used according to label instructions, Dectomax Injectable Endectocide is not likely to have an unintended effect that is harmful to the environment or have an overall adverse impact on dung beetle populations.
  • Increased mortality and impaired development of larvae may be expected but for a limited period after treatment.

Storage:

  • Store below 30°C (Room temperature).

Safety Directions:

  • Poisonous if Swallowed.
  • Avoid Contact with Skin.

First Aid:

  • If poisoning occurs, contact a doctor or Poisons Information Centre. Phone Australia 131 126.
  • For further information, refer to the Safety Data Sheet (SDS).

This information and product advice is not intended as advice or recommendations for any specific use or circumstance. You should seek specialist advice before using any product. Always follow the manufacturer’s guidelines. Specialist Sales liability is limited.​

Withholding Period

Withholding Period Details (WHP):

  • Meat: Cattle 42 days:
  • Meat: Pigs 35 days
  • Milk: Do not use during lactation or less than 60 days before calving when milk or milk products are to be used for human consumption or processing.

Trade Advice: Export Slaughter Interval (ESI):

  • Do not use less than 42 days before slaughter for export.
  • The ESI on this label was correct at the time of label approval.
  • Before using this product, confirm the current ESI with the manufacturer on 1800 814 883 or the APVMA website (www.apvma.gov.au/residues/).

SDS & Technical

Dectomax Injectable Endectocide Label (APVMA) Download Pdf
Dectomax Injectable Endectocide SDS Download Pdf

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