Administration: Remove only one tablet at a time from the foil-backed blister card. Return the remaining tablets to their box to protect the product from light. IVERHART MAX Chewable Tablets can be offered to the dog by hand or be added intact to a small amount of dog food. Care should be taken that the dog consumes the complete dose, and the dog should be observed for a few minutes after administration to ensure that part of the dose is not lost or rejected. If it is suspected that any of the dose has been lost, redosing is recommended.
IVERHART MAX Chewable Tablets should be given at monthly intervals during the period of the year when mosquitoes (vectors), potentially carrying infective heartworm larvae, are active. The initial dose must be given within a month (30 days) after the dog's first exposure to mosquitoes. The final dose must be given within a month (30 days) after the dog's last exposure to mosquitoes.
When replacing another heartworm preventive product in a heartworm disease prevention program, the first dose of IVERHART MAX Chewable Tablets must be given within a month (30 days) of the last dose of the former medication. A heartworm test should be performed prior to switching heartworm preventive products.
If the interval between doses exceeds a month (30 days), the efficacy of ivermectin can be reduced. Therefore, for optimal performance, the tablet must be given once a month on or about the same day of the month. If treatment is delayed, whether by a few days or many, immediate treatment with IVERHART MAX Chewable Tablets and resumption of the recommended dosing regimen will minimize the opportunity for the development of adult heartworms.
Adverse Reactions: Self-limiting adverse reactions including lethargy, limpness, salivation, shaking, diarrhea, decreased appetite, licking lips, and belching were reported between 20 minutes and 72 hours following treatment in a field study with IVERHART MAX Chewable Tablets.
In clinical field trials with ivermectin/pyrantel pamoate, vomiting or diarrhea within 24 hours of dosing was rarely observed (1.1% of administered doses). The following adverse reactions have been reported following the use of ivermectin: depression/lethargy, vomiting, anorexia, diarrhea, mydriasis, ataxia, staggering, convulsions and hypersalivation.
Effectiveness: IVERHART MAX Chewable Tablets, given orally using the recommended dose and regimen, are effective against the tissue larval stage of D. immitis for a month (30 days) after infection and, as a result, prevent the development of the adult stage. IVERHART MAX Chewable Tablets are also effective against canine roundworms (T. canis, T. leonina), hookworms (A. caninum, U. stenocephala, A. braziliense), and tapeworms (T. pisiformis, D. caninum).
A total of 61 dogs and puppies with naturally acquired or experimental parasite infections treated with IVERHART MAX Chewable Tablets were enrolled in 7 well-controlled laboratory studies to establish effectiveness. These studies included dogs of various sizes, ages and breeds. Data from these studies demonstrated IVERHART MAX Chewable Tablets are safe and effective for the removal of the parasite species indicated on the label when used as directed.