Green’s Dictionary of Slang

(US) overdosed on narcotics.

1936		D. Maurer ‘Argot of the Und. Narcotic Addict’ Pt 1 in AS XI:2 124/2: overcharged. Having taken too much dope.
1953		Anslinger & Tompkins Traffic In Narcotics 313: overcharged. In a stupor from an excessive amount of a drug.
1959		J.E. Schmidt Narcotics Lingo and Lore.