Nexgard Spectra for Dogs works rapidly which kills fleas, ticks, prevents heartworm disease, and controls roundworm, hookworm, tapeworm and whipworm. Comes in tasty beef flovored chewable.Available in various pack sizes and contains Afoxolaner and Milbemycin Oxime as active ingredients. Get it now from PetCareClub at 20% OFF with FREE SHIPPING using coupon code: PRESIDENT at checkout. For any queries, contact us: 1-800-304-1918.