In August, the pharmaceutical company Insys Therapeutics cited concerns for child safety when, with a $500,000 contribution, it became the largest donor to Arizona’s anti-legalization drive. But their stated concerns have raised a few eyebrows across the state. Insys manufactures Subsys, a prescription painkiller derived from fentanyl, the synthetic opioid that is up to 100 times more powerful than morphine. Critics say the Insys contribution in Arizona is a ploy to protect market share, mirroring other large donations to anti-marijuana campaigns by pharmaceutical and alcohol companies that fear the growing clout of legal marijuana. (See also: A maker of deadly painkillers is bankrolling the opposition to legal marijuana in Arizona)