HEARTGARD is recommended for dogs 6 weeks of age and older.

Does your dog have digestive disorders or meat/additive allergies? If so, buying a monthly heartworm preventative can be challenging. Heartgard has made it easier by providing you with the option of an unflavored tablet. The tablet contains ivermectin, just as the chew does, and is given monthly to prevent heartworm disease in dogs. This is a great option for dogs with allergies to certain foods, treats, etc.

HEARTGARD Chewables are recommended for use in dogs 6 weeks of age and older.

Heartgard Plus has been shown to be bioequivalent to HEARTGARD, with respect to the bioavailability of ivermectin. The dose regimens of Heartgard Plus and HEARTGARD are the same with regard to ivermectin (6 mcg/kg). Studies with ivermectin indicate that certain dogs of the Collie breed are more sensitive to the effects of ivermectin administered at elevated dose levels (more than 16 times the target use level) than dogs of other breeds. At elevated doses, sensitive dogs showed adverse reactions which included mydriasis, depression, ataxia, tremors, drooling, paresis, recumbency, excitability, stupor, coma and death. HEARTGARD demonstrated no signs of toxicity at 10 times the recommended dose (60 mcg/kg) in sensitive Collies. Results of these trials and bioequivalency studies, support the safety of HEARTGARD products in dogs, including Collies, when used as recommended.

Heartgard Plus Chewables for Dogs | 100 ..

Select from the options below to find the exact version of “heartgard for dogs” that you want: SAFETY: HEARTGARD has shown a wide margin of safety at the recommended dose level in dogs (See PRECAUTIONS for exceptions) including pregnant or breeding bitches, stud dogs, and puppies aged 6 or more weeks. In clinical trials, many commonly used flea collars, dips, shampoos, anthelmintics, antibiotics, vaccines, and steroid preparations have been administered with HEARTGARD in a heartworm disease preventive program.

Heartgard Plus for Dogs - Heartworm Chewables | PetCareRx

Studies with ivermectin indicate that certain dogs of the Collie breed are more sensitive to the effects of ivermectin administered at elevated dose levels (more than 16 times the target use level) than dogs of other breeds. At elevated doses, sensitive dogs showed adverse reactions which included mydriasis, depression, ataxia, tremors, drooling, paresis, recumbency, excitability, stupor, coma and death. HEARTGARD demonstrated no signs of toxicity at 10 times the recommended dose (60 mcg/kg) in sensitive Collies. Results of these trials support the safety of HEARTGARD products in dogs, including Collies, when used as recommended.

Heartgard Plus for Dogs - Drs. Foster and Smith


It's important to never give Heartgard to any pet that has not been tested for heartworm disease. Heartworm preventative medication such as Heartgard cannot kill adult heartworms, but instead kills the baby heartworms known as microfilariae. A dog that already has a heartworm infection may experience a severe reaction as the medication kills off the heavy load of microfilariae circulating in the dog's bloodstream, which may result in serious heart failure or even death. If your dog is taking Heartgard but still manages to contract heartworms, the process of getting reimbursed for heartworm treatment from the manufacturer can be lengthy and time consuming. But at 1-800-PetMeds we don't require all the paperwork. When you buy your dog's Heartgard medicine through us, all you need to send us is your vet's bill and we'll send you a check for the cost of heartworm treatment.* It's as simple as that!