Ans: Any medicine, not just Heartgard, should be given in moderation. It is advisable to increase the pace gradually and keep an eye on your dog’s comfort level. In case your dog shows no apparent symptoms with the dosage, there is no need to worry. Before giving your dog a higher dose of Heartgard, it is highly recommended to check with your dog’s vet first. However, if your dog’s vet has already recommended a dose for your dog and given you the green light, then you can go ahead with caution. Ensure that you increase the dosage gradually.