The U-S Drug Enforcement Agency is warning that two out of every five fake prescription pills contain a potentially lethal dose of fentanyl.
Federal agents are reporting a big jump in the availability of those pills.
Authorities in Wausau report 10 people have died this year alone due to a suspected overdose.
Wausau Police Captain Ben Graham says a lethal dose of fentanyl is only two milligrams.
Graham says the combination of fentanyl and heroin is causing the increase in overdoses.
