For dogs 22-45kg. Sentinel Spectrum is a tasty monthly chewable treatment that protects your dog from fleas, heartworm, intestinal worms and tapeworm. Protects against heartworm when given monthly. Treats and controls all major intestinal worms. Treats and controls tapeworm. Helps control fleas by stopping them from breeding. Safe to use in puppies from 6 weeks, as well as pregnant and lactating females
