I do not have to worry about using this product on my pregnant dog as it safe even to use even on her without any side effects.

It works great on heartworms and is effective for a month.

This is a fantastic product as it is easy to hide on food, unlike the large chewable tablets for which my dog is too fussy to consume it.

I have 4 dogs, so I have to think twice before purchasing a product. Thanks to this generic version of Heartgard, Doug is always safe from heartworms.