Study finds that the aggressive lone star tick is no match for Credelio GREENFIELD, Ind., Aug. 15, 2024 /PRNewswire/ -- Parasites & Vectors, a leading peer-reviewed journal focused on parasites and vector-borne pathogens published the results of a head-to-head study demonstrating that Credelio, a prescription flea and tick protection product from Elanco Animal Health, has the fastest initial speed of tick kill in just 12 hours and sustains that advantage throughout the dosing interval.1,2,3 According to the ...