On the street "speed" is usually a generic term for either homemade or prescribed stimulant drugs of the amphetamine family (methamphetamine, dextroamphetamine, desoxyamphetamine, etc.) The most common "speed" is methamphetamine mainly because it is the only one that can be relatively easily produced illicitly by amateur chemists. Pharmaceutical-grade stimulants such as methylphenidate (Ritalin), which is quite potent, and modafinil are also referred to as speed but less commonly. Cocaine by itself is almost never called speed despite its unrivaled potency but when mixed with a powerful opiate such as heroin or morphine it yields the "speedball". Methylphenidate is also commonly used for this purpose.
speed is another name for the drug methamphetamine which is a derivative of amphetamine.
Seriously, I think that nobody knows..
Mostly of Amphetamine.
A drug that slows your vision down and makes you hyper. A bunch of different chemicals
Speed is an Amphetamine
speed is a class B drug
Speed is the street name for the Class B drug amphetamine sulphate. Sometimes speed is used to refer to other types of amphetamines. Speed is a stimulan.
Slang for Amphetamine
Speed is the street name for Amphetamine, and Methamphetamine which are drugs.
Drug is made illegal by the types or kind of that drug!
anahistomean
Meth
nothing...
amphetamine
It can be swallowed or snorted