Fig. 2From: Protection of dogs against canine heartworm infection 28 days after four monthly treatments with Advantage Multi® for DogsMean trough levels of moxidectin (μg/L) prior to infection with Dirofilaria immitis on Day 112. Dogs were treated with moxidectin on Study Days 0, 28, 56, and 84 and inoculated with third-stage larvae of Dirofilaria immitis on Study Day 112Back to article page