De-Wormers Comparison Chart: Interval
Drs. Foster & Smith Educational Staff

Equine Interval Wormers Chart
Gastrointestinal worms and stomach bots can be a frightening burden for any horse owner. These parasites may cause severe equine health problems, including weakness, muscle loss, diarrhea, colic, ruptured blood vessels, organ damage, or worse. However, a variety of rotational oral horse medications are available to help control strongyles, roundworms, pinworms, hairworms, and similar parasites. These medications, which are technically "dewormers" and commonly called "wormers," contain specific active ingredients to target the various internal parasites. Each is fairly easy to administer at set intervals throughout the year to target specific parasites in various stages of the life cycle.

Product Unique Benefit Active Ingredient Form Helps Control
Horse Health Ivermectin
by Farnam
Economically priced broad-spectrum control 1.87% Ivermectin Paste  
Ivermectin Paste
by Duravet
Apple-flavored Ivermectin-based paste increases palatability to ease administration 1.87% Ivermectin Paste  
Ivermectin Paste
by Med-
Economically priced and apple-flavored to protect your horse and pocketbook 1.87% Ivermectin Paste  
Panacur Paste
by Intervet
Convenient apple-cinnamon-flavored paste eases administration 10% Fenbendazole Paste            
Safe-Guard Equi-Bits
by Duravet
Alfalfa-based pellets ease administration to horses that reject pastes or are hard to catch 0.5% Fenbendazole Pellets            
Safe-Guard Equine Paste
by Duravet
Approved for concomitant use with trichlorfon to treat botfly larvae 10% Fenbendazole Paste            
by Merial
Horse-owner favorite brand offers broad-spectrum parasite control 1.87% Ivermectin Paste  
Zimecterin Gold
by Merial
Broad-spectrum parasite plus specialized tapeworm control from a respected brand 1.55% Ivermectin; 7.75% Praziquantel Paste