Speedball (drug)
Combination of narcotics / From Wikipedia, the free encyclopedia
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Speedball, powerball, or over and under[1] is the polydrug mixture of a stimulant with a depressant, usually an opioid. The most well-known mixture used for recreational drug use is that of cocaine and heroin; however, amphetamines can also be mixed with morphine and/or fentanyl. A speedball may be taken intravenously or by nasal insufflation.[2]
Speedballs often give stronger effects than either drug when taken alone due to drug synergy, and are a particularly hazardous mixture that can easily cause heart attack, respiratory arrest and death.[3] When compared to single drugs, speedballs are more likely to lead to addiction,[4][5] and users are more likely to relapse[4][6] and also to overdose.[7][8][9]