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Sentinel Spectrum Tasty Chews For Medium Dogs 11 To 22Kg (Yellow)

4.8/ 5
Reviews: 214
Brand: Sentinel
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Buy Sentinel Spectrum Tasty Chews For Medium Dogs 11 To 22Kg (Yellow)

Each Dose contains - 11.5 mg Milbemycin Oxime, 230 mg Lufenuron and 114 mg Praziquantel

Shipping Fee

A few products under the categories including 'Accessories', 'Coats & Clothing' and 'Bed' are shipped separately by our shipping partners.

Standard shipping charges based on the product weight and shipping location shall be applicable to these products.

The shipping fees will be calculated before checkout

Goods Returned to Sender

In cases where goods are returned to the sender, such as non-collection, incorrect address, refusal, or carrier error, no restocking fee will be applied. The shipping charges for your order will be refunded only if VetSupply or the carrier is responsible for non-delivery.

Change of Mind Returns

Change of mind returns will be subject to a 10% restocking fee, and the shipping portion of your order is non-refundable.

We understand that returning a product can be frustrating, but we are unable to accept returns for change of mind under the following circumstances:

  • The product has been removed from its original packaging.
  • Labels or seals on the product have been tampered with or removed.
  • The product has clear signs of use, damage, or is soiled.
  • The product contains food or medication.
  • The end customer received the product more than 14 days ago.

Damaged or Incorrect Goods

Any goods that are sent incorrectly or arrive damaged will be replaced at VetSupply's expense. We will uphold our warranty obligations as defined under Australian consumer law. Please contact us regarding any warranty claims, and we will arrange pickup and replacement of the product in accordance with the manufacturer's warranty conditions.

We cannot accept warranty returns for pet accessories that have been damaged by an animal unless a manufacturing fault can be identified with the product. Such claims will be forwarded to the product manufacturer for investigation before accepting a return or replacement.

Returning a Product

Prior to initiating a change of mind return, please contact VetSupply. Goods should be sent to the following address:

Returns, 1/106-108, Station Road, Seven Hills, NSW 2147

Customers are responsible for the shipping costs associated with returning goods, except in cases where VetSupply has agreed to cover return postage costs due to an error on our part. Please note that VetSupply assumes no responsibility for loss or damage during the return transit.

Product refunds will be credited to the original payment method used for the purchase.

Cancelling an Order

Please get in touch with us promptly if you need to cancel an order, as orders cannot be refunded once they have been dispatched from our warehouse.

A monthly tasty chew given for the prevention and control of fleas, heartworm and intestinal worms in dogs.

Sentinel Spectrum is a multi-spectrum dewormer treatment for dogs. It prevents heartworm infection by killing immature form of heartworm. The oral treatment controls adult hookworms, and removes and prevents roundworms, tapeworms, and whipworms. It provides long-term protection and controls flea infestations and flea allergy dermatitis in dogs by preventing the development of flea eggs and larvae.

*Does not kill adult fleas currently on the dog. This monthly dosage protects dogs from all the harmful intestinal worms, prevents heartworms and controls flea infestations -long-term.

How does it work?

Used in the prevention, control and treatment of various worm infections, Sentinel Spectrum is an excellent oral treatment for dogs. It contains milbemycin oxime, which disrupts worms’ nervous system, and cause death. It eliminates the immature stage of the heartworm larvae and the adult stage of hookworms, roundworms and whipworms. Sentinel Spectrum also contains lufenuron, an insect development inhibitor, which breaks the flea life cycle by inhibiting flea egg development. It prevents flea eggs from hatching and thus prevents and controls flea infestation by breaking the flea life cycle. Does not kill existing adult fleas on the dog.

3 in 1 Protection


Why Sentinel?

  • Prevents flea infestations
  • Prevents heartworm
  • Protects against all intestinal worms:
    • Roundworm
    • Whipworm
    • Hookworm
    • Hydatid Tapeworm
    • Flea Tapeworm
  • Tasty beef & bacon chews
  • Once-a-month treatment
  • Easy to administer
  • No mess

For all dogs, great & small

Sentinel is effective for dogs of all sizes, and is available in 3 or 6 chew packs. It’s safe to administer during pregnancy and to nursing dogs, and can be used in puppies from just six weeks of age.^
45kg+ Dogs weighing more than 45kg should be given the appropriate combination of tablets When used according to label directions

Sentinel Spectrum Tasty Chews Important Information

  • Read product leaflet for full instructions
  • Give monthly with a full meal
  • Does not kill adult fleas
  • Before starting Sentinel Spectrum, you should have your veterinarian confirm that your dog does not have heartworm
  • For dogs from 6 weeks of age
  • The following adverse reactions have been reported in dogs after giving Sentinel Spectrum: vomiting, diarrhoea, depression/lethargy or pruritus
  • In safety studies with Sentinel Spectrum, in some cases puppies showed reduced activity, ataxia, tremors and salivation. These signs were most commonly seen with overdosing and were mild, observed only within 24 hours of treatment, and resolved without medical intervention.
  • Before administering Sentinel Spectrum, weigh your dog first.
  • Administer Sentinel Spectrum once a month on the same day of each month year round.
  • Provide the tablet directly into the mouth or mix it with food and give. Ensure that the entire dose has been swallowed.


Dog weight Dog size color
Up To 4Kg Very Small Orange
4 To 11Kg Small Green
11 To 22Kg Medium Yellow
22 To 45Kg Large Blue
  • Sentinel Spectrum is an effective preventive against heartworms and other intestinal worms.
  • It comes in palatable beef-flavored chewable tablets that are like treats for dogs.
  • Sentinel Spectrum provides the broad spectrum coverage against gastrointestinal parasites such as hookworms, roundworms, whipworms and tapeworms.
  • It kills flea eggs, flea larvae and prevents flea infestation in dogs. Does not kill existing adult fleas on the dog.
  • Sentinel Spectrum is easy to administer in dogs.
  • It is safe to use in pregnant and lactating animals.
  • Sentinel Spectrum is for dog use only.
  • Keep it out of reach of children and pets.
  • Store in a dry place at room temperature.


  • In rare cases, adverse reactions like vomiting, diarrhea, depression/lethargy or pruritus have been reported.
  • Contact your vet if any unusual signs are seen after treatment.


  • This product must be administered MONTHLY to prevent heartworm infection.
  • It is recommended for use all year round.
  • Please seek advice from your veterinarian regarding heartworm testing PRIOR to using this product if:
  • your pet is older than 8 weeks of age when you start using this product OR
  • one of the monthly doses is missed or is late by more than 1 week.
Target Species Dogs
Mode of administration Oral
Active Ingredients Milbemycin Oxime
Manufacturer Elanco
Brand Name Sentinel Spectrum

APVMA Approval Number

Sentinel Spectrum Tasty Chews For Small Dogs 4 To 11Kg (Green) 62392/53216
Sentinel Spectrum Tasty Chews For Large Dogs 22 To 45Kg (Blue) 62390/53219
Product Reviews
Reviews: 214
5 Star 4 Star 3 Star 2 Star 1 Star

Came in fast

They took no time to deliver it to me


Its effective

They're worth the buy for him



I had no issues using this treatment



I had bought'em once


Works well

Tasty, useful and effective at the same time

Have A Question?
Q: Hi we have our Cavoodle on a breeding program they the breeder. She supplies Sentinel Spectrum for all the dogs she has on this program. She sends us cut in half tablets for our Cavoodle who weighs approx 6 kg and is five years old. She buys the blue pkts and cuts them in half for small dogs. Would like to know if this is the right thing to do or should she be suppling us with the ones in the the green packet and we would give our dog a whole one?

A: We recommend consulting with a vet regarding this.

By, on May 01, 2024
Q: I am seeing conflicting information on the internet about this product. Can you tell me how many "monthly doses" are included in this "3 chew" pack, please?

A: Sentinel Spectrum 3 Chew pack contains 3 monthly doses.

By, on Feb 21, 2024
Q: What is the Expiry Date of your 12 month pack of Sentinel Spectrum chews medium dogs please? I need to cover to August 2024.

A: All the doses we carry for Sentinel Spectrum have a minimum shelf life for one year.

By, on May 03, 2023

A: The price for a pack of 6 SENTINEL SPECTRUM chews varies for different dog sizes. Kindly check the product page and choose the appropriate pack according to your dog's weight.

By, on Feb 22, 2023
Q: can I pay by paypal

A: Yes. At VetSupply we accept payment through Bank Transfer, AfterPay, Credit/Debit Card, and PayPal.

By, on Aug 23, 2022

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