Comfortis reviews

Comfortis Bottom line

Comfortis is a prescription flea treatment in the form of a monthly, chewable tablet. Although it kills only adult fleas, it keeps working all month, taking out new fleas as they develop. As a result, most vets and users say it's effective enough to wipe out an infestation all by itself. Although most pets can use this drug with no side effects, it can cause vomiting, and on rare occasions more serious complications might develop.

Effectiveness

Vets praise its effectiveness. Eric Barchas, vet-in-residence at Dogster.com, considers Comfortis the most effective flea treatment available for dogs. He says most owners who try it -- including himself -- "never look back." The vets at Twin Maples Veterinary Hospital in Ohio say Comfortis kills adult fleas in as little as 30 minutes and its effects last a full month, killing new fleas as they develop before they have a chance to reproduce. Pet owners who review Comfortis at 1800PetMeds.com are generally enthusiastic about its effectiveness as well. Many of them say it worked when all other flea treatments failed -- including other vet-prescribed products.

Safety

Use with caution. The biggest downside of Comfortis is the relatively high rate of side effects. Vomiting is the most common problem, and Barchas admits that "a small proportion" of dogs will be unable to use Comfortis for this reason. However, the reviews we consulted from users included rare reports of more serious side effects as well, including some who blamed the treatment for the death of their pets. Dogs are more likely to develop serious side effects than cats. Although these reactions are rare, they're also hard to predict. As a result, we would advise using Comfortis under the supervision of a vet, and then perhaps only if other treatments have failed.

Ease of use

May take some coaxing. Most pet owners find Comfortis easy to use. Users like the fact that, unlike topical treatments, it doesn't have any odor or leave a greasy residue on the pet's fur. However, a few pet owners say getting the pet to take the pill can be tricky. Some users say their pets ate the beef-flavored tablet right out of their (the owners') hands, but others say they had to resort to tricks like slipping it in a "pill pocket" or grinding it up and mixing it with peanut butter.

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