speed freak

and speedhead

n. a drug user who injects methamphetamine; an amphetamine user. (Drugs and general slang.) Speed freaks, not heroin addicts, account for a high proportion of drug-related crime.

Common Names:

Name	Pronounced	Usage
Iqbal	-	Arabic
PÅL	-	Swedish, Norwegian
MÓRrÍGhan	-	Irish Mythology
Alfons	AHL-fawns (German, Dutch, Polish)	German, Dutch, Polish, Ancient Germanic
Blythe	BLIEDH	English (Rare)
Cillian	-	Irish