Bravecto 1-Month Chew for Medium Dogs 22-44LBS [Green] prevents flea infestation within 4 hours of administration and ticks within 48 hours. This protects against 4 species of ticks like Black-legged ticks, American dog ticks, lone star ticks, and brown dog ticks. It affects the nervous system of the external parasites and shows 100% efficacy against fleas and ≥97.7% efficacy against ticks. Give your pet protection against Lyme Disease. Get Free Shipping + Rewards. Get up to 10% off with the auto-order option. Apply Coupon Code: SUMR10