300
This drug slows both heart rate and respiration, which can be fatal when mixed with alcohol.
What is What are Sedatives, Hypnotics, and Anxiolytics as well as opiates? (Heroin, oxycontin, percocet, morphine, Xanax, Librium, Valium, Benadryl, Ambien) (Source: National Institute on Drug Abuse)