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Comfortis (spinosad) for Dogs

Comfortis (spinosad) for Dogs
Dogs 5-10 lbs & Cats 4-6 lbs, 6 Pack - Pink - 6 Chewable Tablets
Dogs 10-20 lbs & Cats 6-12 lbs, 6 Pack - Orange - 6 Chewable Tablets
Dogs 20-40 lbs & Cats 12-24 lbs, 6 Pack - Green - 6 Chewable Tablets
Dogs 40-60 lbs, 6 Pack - Blue - 6 Chewable Tablets
Dogs 60-120 lbs, 6 Pack - Brown - 6 Chewable Tablets
SKU : 51610_-RX
Price: $112.58
Price: $112.58
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Veterinarian Prescription (Rx) Required
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  • Kills Fleas and Prevents Infestations
  • Starts killing fleas in 30 minutes
  • Kills fleas before they can lay eggs
  • For dogs (canine)
  • Chewable Tablets
*Manufacturer restricts additional discounts on this item unless explicitly specified. 
How to Order Prescriptions


Comfortis® (spinosad) is the first FDA-approved, chewable, beef-flavored tablet that kills fleas and prevents flea infestations on dogs for a full month. Comfortis is:

  • Convenient. Easy to give, with no messy applications
  • Fast. Starts to kill fleas in 30 minutes — before they can lay eggs
  • Effective. Provides full flea protection for a full month

And Comfortis has been demonstrated to be safe for dogs and puppies 14 weeks and older.

Available Sizes

140 mg (Pink Dogs 5 to 10 lbs or Cats, 4 to 6 lbs
270 mg (Orange Dogs, 10 to 20 lbs or Cats, 6 to 12 lbs
560 mg (Green) Dogs, 20 to 40 lbs or Cats, 12 to 24 lbs 
810 mg (Blue Dogs, 40 to 60 lbs 
1620 mg (Brown)  Dogs, 60 to 120 lbs 



  • No need to isolate. With Comfortis, you can play with your dog immediately after treatment. No need to isolate from other household pets or children. Just treat and play.
  • No staining residue. Unlike some other flea treatments, Comfortis won't stain carpeting, upholstery or clothing.
  • No bath-time worries. Comfortis can't be washed, rubbed or shaken off while bathing or swimming.

Dog owners are most satisfied when using Comfortis, according to veterinarians.1 View video testimonials about how convenient, and family-friendly Comfortis is for veterinary professionals and their clients.


How to Use Comfortis

Comfortis chewable tablets are one of the most convenient flea products on the market today.

Use the following as general guidelines for administering Comfortis. Ask your veterinarian about your dog's specific needs.

  • Administer monthly.
  • For best results, administer year-round without interruption.
  • Administer with food for maximum effectiveness.
  • Administer the correct dose as prescribed by your veterinarian.
  • If you miss a dose, give Comfortis immediately and resume regular monthly dosing.

If necessary, you can administer Comfortis like you would other tablet medications.