Comparison Chart of Wormers for Dogs
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Dewormer Comparison Chart

Drs. Foster & Smith Educational Staff
Click here for a pdf version of this article.
As a general rule you may not see the worms that infect your dog or puppy. Since most puppies are born with worms, it's very important that you get them on a deworming regime as soon as age permits. For adult dogs a fecal exam by a veterinarian is the quickest and most accurate way to tell if your faithful friend has worms of any kind.

The following is a list of wormers we have available, their ingredients, minimum age, weight requirements, and type of worms they treat.

Ingredients LargeRound-worms Hook-worms Tape-worms Whip-worms Heart-worms NeedRX SafeDuringPreg-nancy Min.Age/Weight
PRO-Wormer-2® Pyrantelpamoate yes yes 2 wks
Nemex®-2 Pyrantelpamoate yes yes 2 wks
Droncit® Praziquantel yes yes yes 4 wks
Drontal® Plus Praziquantel,Pyrantelpamoate,Fenbendazole yes yes yes yes yes 3 wks& 2 lbs
Panacur® Fenbendazole yes yes yes** yes yes yes None
Heartgard®Plus Ivermectin,Pyrantelpamoate yes yes yes yes yes 6 wks
Heartgard®Chewables Ivermectin yes yes yes 6 wks
Sentinel® Milbemycinoxime yes yes+ yes yes yes yes 4 wks& 2 lbs
Revolution®++ Selamectin yes yes yes 6 wks
Tri-Heart® Plus Ivermectin,Pyrantelpamoate yes yes yes yes yes 6 wks
Safe-Guard®Granules Fenbendazole yes yes yes** yes yes 6 wks
Advantage MultiTM++ Imidacloprid/Moxidectin yes yes yes yes yes n/d 7 wks/3 lbs
Iverhart Max® Ivermectin/Pyrantel/Praziquantel yes yes yes yes yes n/d 8 wks
Trifexis Milbemycin oxime/Spinosad yes yes yes yes yes 8 wks/5 lbs
Ingredients LargeRound-worms Hook-worms Tape-worms Whip-worms Heart-worms NeedRX SafeDuringPreg-nancy Min.Age/Weight
**Not effective against Dipylidium caninum, the tapeworm transmitted by fleas.+Not effective against Uncinaria, the Northern hookworm.++Also effective against fleas, flea eggs, ticks, and certain mites. Applied topically.

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