“My vet had recommended interceptor plus not only as a preventative, but my dog’s last fecal test came back as positive for whipworms. So far the medicine seems to be working well. My dog hasn’t experienced any bad side effects, and my husband said he swore he saw a dead worm in his last bm. So it must be working! As far as service, I am extremely happy with Allivet. Not only were they prompt in replying to my order, but they contacted my vet immediately to get the prescription. In addition, I paid 1/3 of the price for a full year compared to my vet and shipping was quick too. Thanks Allivet!”