Activyl For Large Dogs 44 – 88 lbs Purple

Reviews: 83
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Activyl Flea Control for Dogs

Activyl for Dogs is a highly effective flea control product from Merck containing the active ingredient Indoxacarb, which not only eliminates adult fleas on dogs but also disrupts the flea’s lifecycle by preventing eggs and larvae developing further. Activyl is an ectoparasiticide, which needs to be applied once a month only for total flea control.

Activyl contains Indoxacarb, an active ingredient with an innovative mode of action for flea control. The product acts by blocking the nerve sodium channels of fleas. After the application of Activyl, its active ingredient spreads through the skin of the dog. When a flea bites the dog, it triggers bioactivation by which the active ingredient is activated using enzymes inside the flea.


  • New technology, innovative active ingredient and unique mode of action
  • Starts action within 8 hours and keeps on killing fleas for 4 weeks
  • Suitable for puppies 8 weeks and older and weighing 4 lbs and above
  • Odor-free, quick drying and waterproof
  • Not only acts against adult fleas but also breaks flea lifecycle and prevents eggs developing into larvae
  • Hold the applicator in upright position away from your face and snap open its tip by folding it.
  • Keep the dog in standing position.
  • Part the coat between the shoulder blades and squeeze entire contents of the applicator onto the skin evenly.
  • For very small and small dogs, apply at one spot.
  • For medium, large and very large dogs, apply at two, three and four spots respectively along the shoulder blade.
  • Repeat every 30 days.

Product Specifications: Activyl for Dogs is available as an OTC product in the following specifications:

Size of Dogs

Weight Range


Very Small Dogs

4 – 14 lbs

0.51 ml

Small Dogs

14 – 22 lbs

0.77 ml

Medium Dogs

22 – 44 lbs

1.54 ml

Large Dogs

44 – 88 lbs

3.08 ml

Extra Large Dogs

88 – 132 lbs

4.62 ml

  • Do not use on puppies and dogs under 8 weeks of age and weighing less than 4 lbs.
  • Do not use on pregnant or lactating dogs. Consult your vet before using on ageing or wounded dogs.
  • Do not use more than one applicator per month.
  • Avoid contact with skin or eyes. In case of accidental splash, rinse the affected area thoroughly and contact a nearby poison control centre. If swallowed, drink a glass or two of water and call a doctor.

Ratings & Reviews

Based on 83 Review(s)

Average Rating


Ratings Overview










Most Recent Reviews
  • Cookie
    A great product
    Dec 15, 2021

    Activyl kills all the active fleas and reproducing fleas. Making our pet protected and into a perfect shield.

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  • Cookie
    A great product
    Nov 12, 2021

    It is an amazing product for your dog's benefit

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  • Cookie
    Really Helpful.
    Sep 20, 2021

    It is a great product and works on immediate basis just within 8 hours of administration.

    2 of 2 found this review helpful.
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  • Cookie
    Great Product
    Sep 02, 2021

    This monthly treatment for prevention is really great and effective.

    4 of 8 found this review helpful.
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  • Cookie
    Highly recommended
    Aug 11, 2021

    This is one of the best and effective product we have been using for our dog since 2 years.

    6 of 11 found this review helpful.
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