Which statement is true about the monthly preventatives used for MWDs?

• A. They include Heart Guard and Advantix
• B. They include Heart Guard and Sentinel
• C. They include ivermectin and praziquantel
• D. They include Frontline Plus only

Answer: (A)

Monthly preventatives for MWDs are typically used in combination to cover the main parasite risks dogs face. Heart Guard provides heartworm prevention, given every month, while Advantix is a separate topical product that protects against fleas and ticks on a monthly basis. Using these two together gives broad protection across heartworms and external parasites, which is why this statement is true.

The other options mix products that aren’t the standard monthly pairing in this context or describe a single product that wouldn’t cover all the relevant parasites. For example, Sentinel is a valid monthly preventive but it’s a different combination (milbemycin with lufenuron) and isn’t the pairing highlighted here; ivermectin with praziquantel isn’t a standard monthly combination for routine preventives; Frontline Plus, while useful for fleas and ticks, does not provide heartworm prevention on its own.