This is the only heartworm med that my dog has ever taken, and he hasn't had a problem with worms. This med is economically priced, which is very nice. However, my dog is less than thrilled when it's time to take it. Wish it tasted better so I didn't have to trick him into it.
We have been using Iverhart Plus for our dog for over 12 years. VetDepot.com was the most economical place we have found to make this purchase and the order came to us in a couple of days...Very Pleased.
So far it has been the best for fighting fleas. It's a great quality product and the price is affordable.
We switched to Iverhart because of the price -- our 4 dogs are on it once a month and are very healthy.
Since we read a side-by-side comparison between Heartgard Plus and Iverhart Plus, we've been using Iverhart and saving money. It is a chewable pill form rather than Heartgard's soft chew. But that isn't a problem for our dogs. Just the crackling of the package has them begging.