Health care providers, police, legislators and others are working on ways to curb widespread prescription drug abuse in Indiana . The state attorney general's office hosted a symposium on the problem last week in Indianapolis . The National Institute on Drug Abuse says 7 million Americans currently abuse prescription drugs. That's more than the number using cocaine, heroin, hallucinogens and inhalants combined. The Indiana State Department of Health says 654 Hoosiers died from unintentional drug overdoses in 2010.