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  • Frontline Tri-Act Flea & Tick Treatment for Dogs Medium Dog (10-20kg) - 3 Pack

Frontline Tri-Act Flea & Tick Treatment for Dogs Medium Dog (10-20kg) - 3 Pack By Frontline

SKU: 367412

Weight: 0.1kg

Please note: This is a NFA-VPS product, please fill in your pet details at checkout so our Veterinary Medicines manager can approve use and avoid the order being delayed. Please click here for the Veterinary Medicines Directorate for further information on this product.


Give your dog a new level of parasite protection

New FRONTLINE Tri-act® FOR DOGS has a unique formula that kills faster and repels more disease-carrying parasites than the next leading competitor brand.  Used every 4 weeks, it is the next level in parasite control for dogs, providing long-lasting protection against flying insects as well as fleas and ticks whilst also preventing home flea infestations. 

FRONTLINE Tri-act® FOR DOGS helps to keep your dog active, healthy and happy by working against a range of common UK parasites that can transmit diseases or cause irritation to your dog.  Use every 4 weeks for optimal protection.  

KILLS
•Starts killing fleas in just 5 minutes1 
•Kills newly arriving fleas and ticks on your dog within 6 hours and keeps working for the whole duration of treatment
•Kills mosquitoes, biting flies and sandflies

REPELS
•Repels ticks for 4 weeks
•Helps reduces the risk of tick-borne diseases 
•Repels flying insects for up to 5 weeks to prevent them from biting

CONTROLS
•Prevents a flea infestation in your home when used every 4 weeks by killing fleas before they can lay eggs.

Clinically proven and formulated specifically for dogs, FRONTLINE Tri-act® FOR DOGS is also water-resistant after 48 hours – so your dog can enjoy occasional swimming and bathing and still stay protected.

1.Halos et al. (2016) Parasites & Vectors, 9:57
FRONTLINE Tri-Act® contains fipronil and permethrin. UK: NFA-VPS. Further information available in the SPC or from Boehringer Ingelheim Animal Health UK Ltd, RG12 8YS, UK. FRONTLINE Tri-Act® is a registered trademark of the Boehringer Ingelheim Group. ©2020 Boehringer Ingelheim Animal Health UK Ltd. All rights reserved. Date of preparation: Sept 2020. UI-PHC-0175-2020. Use Medicines Responsibly.



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Ratings & Reviews

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20/10/2025 10:33:00 PM

Great all in one

by Emily Davis -

Good to have a product that tackles multiple parasites with one easy application. Worth the investment

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18/7/2025 1:33:00 PM

Very pleased

by Jacob Wilson -

I was worried about ticks but this has kept them completely away. Will continue to purchase this size

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11/7/2025 3:25:00 PM

Effective and safe

by Ava Perez -

I trust this formula to be both strong against parasites and safe for my dog's skin. Quick drying too

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19/7/2025 3:28:00 PM

Good ongoing care

by Noah Carter -

The 3 pack gives a good block of protection for three important months. Simple to store and apply

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29/8/2025 8:25:00 AM

Recommended by vet

by Mia Green -

Our vet suggested this brand for comprehensive coverage. We have been very satisfied with the results

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26/5/2025 8:33:00 AM

No fleas this year

by Liam Hall -

Using this consistently and we've had a completely flea free household. Highly recommend this routine

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30/9/2025 8:51:00 PM

Good for medium size

by Sophie Evans -

The dosage is clearly marked and correct for his weight range. No adverse reactions observed

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26/5/2025 9:42:00 AM

Works as described

by Ben Taylor -

Reliable flea and tick protection for a full month per dose. The 3 pack is a great economic option

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7/9/2025 7:15:00 PM

Best tick defense

by George King -

We hike a lot and this is the best protection we've found against ticks. Easy to apply to our medium dog

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30/6/2025 9:37:00 AM

Very effective treatment

by Laura Perry -

Cleared up an infestation quickly and now using it monthly for total prevention. Great for my cocker spaniel

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