Seresto Flea Collar For Dogs Over 8kg

Seresto Flea Collar For Dogs Over 8kg
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One Collar

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  • One Collar £36.99


Seresto Flea Collar For Dogs Over 8kg

Fleas and ticks do more than just bite. They can also transmit diseases, which can be harmful and even fatal for pets.

Only Seresto Flea Collar protects your dog for up to eight months in a single application. The collar releases its active ingredients at a slow and steady rate and is able to repel and kill fleas and ticks without the need to bite your pet. *

Just pop it on your dog for up to eight months of protection. No mess, no grease, no smell – and no need to remember monthly flea applications.

Take a look at our other flea, ticks, and mites products, worming medication, and supplements for dogs

Need help or advice? Contact us:

  • Landline: 01582 842096
  • Mon - Fri: 9:00am - 5:00pm
  • Sat: 9:00am - 1:00pm
  • Email: [email protected]

All prices include VAT where applicable.

Medication Datasheets

Reviews (108)

Summary of Reviews for Seresto Flea Collar For Dogs Over 8kg

Overall 5
Ease Of Use
Value For Money
Absence Of Side Effects
102 out of 108 (94%) customers would recommend this product.
5 stars (90 reviews)
4 stars (10 reviews)
3 stars (3 reviews)
2 stars (2 reviews)
1 stars (3 reviews)

Only verified purchasers of this product can leave a review.

55 Non invasive form of flea and tick control
Verified Purchase

By on 14 February 2022

Really good product, once on, no need to worry for about 6 months. I’ve used the drops on neck products in the past that have burnt my sofa after the dogs shook! The seresto collars leave my dogs without any un toward reaction. Really pleased with the collars

Customer recommends this product

55 Quick and easy
Verified Purchase

By on 7 November 2021

Seems to the best and longest lasting flea treatment.

Customer recommends this product

15 Disappointed with effectiveness
Verified Purchase

By on 1 September 2021

Collars have not worked at all on either dog, after 3 weeks of continuous wearing both dogs still have live fleas on bodies.

Customer does not recommend this product

55 Perfectv
Verified Purchase

By on 17 August 2021


Customer recommends this product

45 All you need in one
Verified Purchase

By on 14 July 2021

No need to keep re-applying flea treatment every few months. This does the trick and last a long lasting. Brilliant

Customer recommends this product

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Q & A

Below are some recent questions we've received regarding Seresto Flea Collar For Dogs Over 8kg, including answers from our team.

18 May 2022 at 9:02am

Pregnant bitch around other dogs in house with Seresto Collars


Hi, I have a multi-dog household, is it safe for my pregnant bitch to be lying with her housemates, I’ve taken her own collar off.
Thank you

  • VioVet Staff

The datasheet states the following:
Laboratory studies with either flumethrin or imidacloprid in rats and rabbits have not produced any effects on fertility or reproduction and showed no teratogenic or foetotoxic effects. However, the safety of the veterinary medicinal product has not been established in target animals during pregnancy and lactation and in the absence of available data, the product is therefore not recommended in pregnant and lactating bitches or queens.

This means it should not be used in pregnancy or lactation, so you are right to remove your pregnant bitch's collar. The collar will transfer ingredients by prolonged direct contact with the skin. If your dog will spend a few hours or more consistently in contact with a collar then the ingredients may transfer over. It is hard to say for definite whether your dog's sleeping next to each other will be an issue, it may be safest to separate them at night just to be safe.
If your pregnant bitch will not be in skin contact with a collar when lying with her housemates then this should not be an issue. The ingredients cannot transfer from the skin of a dog with a collar on it, it must be from skin contact with the collar itself.

17 January 2022 at 9:20am

Heart worm/leishmania


My dog comes with us to Portugal so does Seresto protect against heart worm and Leishmania

  • VioVet Staff

This product is licensed to protect against fleas and ticks. Leishmania is a tick-borne disease and so it will provide some protection against this by killing ticks. Heartworm is transferred by mosquito bites which Seresto does not specifically protect against. It is recommended to use a Scalibor Collar instead if you are wanting to protect against these two diseases specifically.
If you wish to treat for heartworm then you will need to contact your vet for advice on heartworm products.

20 June 2021 at 3:00pm

Serestco Flea Collar over 8kg

Bethan King

Will the over 8kg be ok to us on my Rottweiler?


  • VioVet Staff

This depends on the weight of your Rottweiler, if over 8kg and 7 weeks of age then this collar is a great choice.

14 March 2021 at 10:47am

Seresto flea collar

Jennifer Pettman

How can I be sure your Seresto flea collars are genuine ones as there are a lot of fake ones being sold. Thanks

  • VioVet Staff

We stock all of our medications from licensed wholesalers, the same as your vet would receive supply from. We are one of the Veterinary Medicine Directorate Accredited Retails which means we undergo additional measures to ensure a high quality service is provided. You are right to be cautious as counterfit Seresto Collars have been in circulation but I can reassure you the ones we provide are genuine and made by Elanco themselves.
If you ever receive medication from a source you are unsure of then you can ring Elanco (the manufacturer) with the batch numbers/expiry date of the product. They can then verify whether the product was made by them or not.

3 January 2021 at 11:18am

Large Seresto tick collar , how long is the sell by date if I buy now.


We usually put a large Seresto collar on our Labrador in February how long does the treatment last, she has it on all the time.

  • VioVet Staff

Seresto collars reaming active, releasing the medication to your dog's skin for up to 7 to 8 months. It is recommended a new collar is applied after the 7 to 8 month mark.

19 August 2020 at 10:13am

Seresto + advocate

Jill Greenwood

  • VioVet customer since 2015
  • From: West Yorkshire, United Kingdom

I use advocate on my two dogs as they are not reliable tablet takers. Can I use the Seresto collar plus their 3 monthly Advocate, or is that too much in their system. If not is their another spot on for worms i can use in combination with the collar instead either on or off prescription?

  • VioVet Staff

You will be giving a double dose of imidacloprid if you use Seresto alongside Advocate. However overdoses of 5 to 8 times the recommended amount of imidacoprid were tolerated well in dogs in a clinical trial, with no adverse side effects. Seresto also delivers only what your dog needs, therefore it will stop dosing with imidacloprid if you have applied the Advocate, until the Advocate wears off (after 1 month).

Taking the above into account it is likely very safe to use Advocate alongside Seresto. It is worth noting you are not covering tapeworms with this treatment plan though. Unfortunately only tabletable wormers will do this. Please contact us at [email protected] if you would like advice on this.

15 August 2020 at 9:02am


W Brooks

Is this suitable for an 8 week old puppy?

  • VioVet Staff

Yes this product is suitable for puppies over 7 weeks old.
Seresto Collars last up to 7 to 8 months so I would advise picking a collar size (<8kg or >8kg) based on the weight your dog will grow to be within this time period. If you think your puppy will by heavier than 8kg within 7 months then I would choose the larger collar size.

The collar will need to be adjusted as your puppy grows but this can be done easily. The product itself will only dose your dog with the right amount that they need depending on their current size, so you do not need to worry that a larger collar will give too large a dose.

13 July 2020 at 5:08pm

What wormer should be used alongside this collar?


I was led to believe that only certain wormers should be used, if that is the case what wormer should be used alongside this collar?

  • VioVet Staff

One of the following wormers would work well alongside this collar:

A Wormer containing Praziquantel, Pyrantel and Febantel - this will cover roundworms and tapeworms, routine worming recommended every 3 months. Our own brand TermaWorm is a good example

A Wormer containing Milbemycin Oxime and Praziquantel - this will cover roundworms, tapeworms and lungworm if used monthly. Examples include Milpro, Milbemax, Milprazon

18 June 2020 at 12:15pm

Does my dog have to wear this 24 hours a day?


Does my dog have to wear this 24 hours a day, or just when he’s out to protect from ticks?

  • VioVet Staff

Seresto collars must be worn constantly for 7 to 8 months until the product expires in order for guaranteed flea/lice/tick protection. This is because it takes up to for 48 hours for the ingredients to build up until high enough levels in the skin to kill ticks. The ingredients only transfer whilst the collar is on, removing the colar will allow the protection to fade.

13 January 2020 at 6:17pm

Neck SIze


What is the largest neck the collar will fit? I have Irish Wolfhounds, neck size up to 65 cms.

  • VioVet Staff


Thank you for getting in touch.

This collar is 70cm long.

Hope that helps,

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