Protection against ticks, fleas, mites and worms Kills ticks within 48 hours Kills fleas in 30 minutes For the treatment and prevention of flea infestation Prevents heartworm infestation Protects against adult hookworms, roundworms and MORE NEXGARD Spectra protects against adult Spirocerca lupi in the oesophagus in dogs and contains the active ingredients afoxolaner and milbemycin oxime protecting dogs weighing at least 2kg's. Safe and effective for peace of mind.