Drug companies are working to develop a pure, more powerful version of the nation’s second most-abused medicine, which has addiction experts worried that it could spur a new wave of abuse, reports the Associated Press.
The new pills contain the highly addictive painkiller hydrocodone, packing up to 10 times the amount of the drug as existing medications such as Vicodin. Four companies have begun patient testing, and one of them, Zogenix of San Diego