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Methamphetamine may be taken PO, IV, smoked and snorted (intranasal).
Reference
Department of Justice/Drug Enforcement Administration (2020). Drug Fact Sheet. From
https://www.dea.gov/sites/default/files/2020-06/Methamphetamine-2020_0.pdf
Hughes Z. (2018). The Last Frontier: Inside Alaska's Meth Epidemic. In the remote state, opioids have had a grip on the population — but meth is making a comeback. Rolling Stone.