New drug cocktail unfazed by Narcan

There's a new culprit in the war on drugs. Law enforcement agencies across the country say the animal sedative known as Xylazine is now fueling America's drug crisis. Authorities say dealers are lacing it with other drugs to create a deadly concoction known as "Tranq Dope." A mother who lost her son to drugs explained to FOX News that deadly combination can't be undone by Narcan.