NexGard Spectra for Medium dogs 16.5-33LBS [Green] is a tasty beef-flavored chew that kills fleas and ticks along with internal pests like roundworms, hookworms, lungworms, and whipworms. It is a monthly chew that is safe for all dogs above 8 weeks of age irrespective of their size and breed. There is no restriction on touching, swimming, or bathing dogs after treatment. Earn rewards and get free shipping. Save an extra 10% with auto-order. Apply Coupon Code: WINBLUE10