Some preventatives require a veterinary visit Your dog must have an annual heartworm test to be prescribed this medication. Need a test? Contact your veterinarian – they may be able to approve your prescription online. Give your dog complete protection with Advantage Multi for Dogs (imidacloprid + moxidectin) - the 6-in-1 monthly topical solution for dogs. Advantage Multi not only prevents heartworm disease, but also treats and controls sarcoptic mange and intestinal worms including roundworms, whipworms and hookworms. This layered protection also treats and prevents flea infestations. Your dog or puppy must be at least seven weeks old to use this Advantage Multi formula for Dogs. Check the product label for information on application and potential side effects. Subscribe to regular doorstep deliveries, so you never miss a monthly treatment. Delivers 6-in-1 protection from heartworms, fleas, intestinal parasites, & sarcoptic mange. Veterinarian-trusted formula lasts 30 days. Kills fleas through contact; pests don’t have to bite your dog to die. Treats & controls roundworms, hookworms, & whipworms. Easy-to-apply topical treatment, no hard-to-swallow pills. Advantage Multi for Dogs is a trademark of Elanco or its affiliates.