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
Everett	EV-ə-rit, EV-rit	English
CeallachÁN	-	Irish
Zyanya	-	Native American, Zapotec
Kinge	KING-ə	German
Shamus	SHAY-mus	Irish
Theodor	-	German, Swedish, Norwegian, Danish, Czech, Romanian