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Sentinel Spectrum Chews. Green for Small Dogs 4-11kg

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SENTINEL® SPECTRUM is the most convenient way to get 3-in-1 parasite protection against heartworm, intestinal worms - including tapeworm - and fleas. One delicious beefy flavoured chew given once a month with a full meal, all year round is all it takes to give your dog a lifetime of protection against the most dangerous worms and fleas.

Dogs should be tested by a veterinarian to ensure that they do not have heartworm before commencing SENTINEL® SPECTRUM .

Simply give one SENTINEL® SPECTRUM chew once a month with a full meal. Most dogs will take the chew from your hand.

SENTINEL® SPECTRUM must be given every month, preferably on the same date each month to ensure complete protection for your dog.

SENTINEL® SPECTRUM is available in small dog sizes that can be given to puppies from 2 weeks of age.

Pack sizes: 3 Chews and 6 Chews

Milbemycin oxime, praziquantel and lufenuron are the active ingredients in Sentinel Spectrum Tasty Chews.

Milbemycin oxime interferes with nerve transmission in invertebrates, which helps protect against heartworm, roundworm, hookworm and whipworm (minimum dose rate: 0.5mg/kg).

Praziquantel causes muscle spasm in tapeworm, which are then attacked by enzymes and disintegrate (minimum dose rate: 5mg/kg). It kills all intestinal forms of tapeworm except Spirometra spp, which require a higher than standard dose rate.

Lufenuron is an insect growth regulator that interrupts the flea breeding cycle. Adult fleas that feed on an animal treated with Sentinel Spectrum will produce eggs or larvae that do not develop to the adult stage. Therefore reducing the number of fleas in the environment.

Sentinel Spectrum Tasty Chews are beef-flavoured, and studies have shown they are so palatable that 97% of dogs accept them straight from the hand.


Sentinel Spectrum Tasty Chews provide broad spectrum parasite protection.

Sentinel Spectrum Tasty Chews prevent heartworm (Dirofilaria immitis) and control roundworm (Toxocara canis, Toxascaris leonina), hookworm (Ancylostoma caninum), whipworm (Trichuris vulpis), tapeworm and flea infestations in dogs.

Dosage and Administration

Once a month, ideally on the same date.

If a dose is overdue by <15 days, treat immediately and resume monthly dosing.

If a dose is missed by 15-30 days, heartworm prevention can be maintained if treated immediately and monthly dosing resumes for at least the next 2 months.

If a dose is missed by >60 days, a veterinarian must be consulted in case the animal has contracted heartworm. Dosing may be recommenced, and a blood test for adult heartworm must be performed after 6 months.

Dose must be given with a full meal, either within food or immediately afterwards (to allow effective absorption of lufenuron).

Formulations and Packaging:
Sentinel Spectrum Tasty Chews containing 2.3mg milbemycin oxime, 22.8mg praziquantel and 46mg lufenuron in orange pack.

Sentinel Spectrum Tasty Chews containing 5.75mg milbemycin oxime, 57mg praziquantel and 150mg lufenuron in green pack.

Sentinel Spectrum Tasty Chews containing 11.5mg milbemycin oxime, 114mg praziquantel and 230mg lufenuron in yellow pack.

Sentinel Spectrum Tasty Chews containing 23mg milbemycin oxime, 228mg praziquantel and 460mg lufenuron in blue pack.

97% of dogs will take the tasty chews straight from the hand. Otherwise, the dose can be added to a small meal or placed directly in the mouth, similar to tablet dosing.

Sentinel Spectrum Tasty Chews come in packs of three (a 3-month supply) and six (a 6-month supply).


Sentinel Spectrum Tasty Chews can be safely used in puppies from 6 weeks of age, breeding males and females, and collies sensitive to ivermectin.

Sentinel Spectrum Tasty Chews have been safety tested at up to 10 times the recommended dose.

If an animal with adult heartworm infection (and therefore circulating microfilariae) is given Sentinel Spectrum, a transient shock-like reaction can occur. To avoid this, dogs should be tested for adult heartworm and treated if necessary, before starting Sentinel Spectrum.


***We regret that we are unable to ship this product to the United States***

Customer Reviews

Based on 39 reviews
I love this product

I have two Chihuahuas Brian and seth and I am totally blind! The sentinel really helps them, the only problem is because I can't do the flea treatment using the solution because I am totally blind this is the best product, the problem is my dogs are very fussy and refused to take it from my hand, another problem is I have tried giving it to them in their meals my boys deliberately don't touch it because they don't like the taste even though it is meant to be yummy! I have tried putting it down there throats, and even though it goes into the mouth, they spit it back out again, this is stressful for me because I wish that they would take it like a treaty, but this is the only product that I'm able to use, I wish it was subsidised though as I'm on a blind pension, but otherwise I love this product for both my boys and the problem with them spitting it out is so bad I have to take them to the vet with my Caira to get them to take it! I wish there was a paste the did the same thing as the sentinel to but it would be easier to put that in their mouth because the sentinel chew is really hard for me to get them to take! It's really annoying and frustrating

Perfect Product

We have been using this product for our Maltese cross for the past ten years. It is completely reliable in providing protection against fleas, worms and heartworm. our dog has never suffered from any of these complaints since taking these tablets once a month.

Sentinel Spectrum Chews

I used this on my last dog and had the opportunity to change to a different method for worming etc. with my new dog but have stuck with it for convenice - preformance - reliablity. Go Sentinelspectrum chews.

Worry free protection

Having used this product for our dog for several years I am impressed with the level of protection it provides. No fleas, no worms and easy to administer!

Complete and Convenient.

I have used Sentinel Spectrum with our Jack Russel/King Charles Cav cross for eight years. It is effective and good value. Simply add it to the evening meal.