Speed Ice: Ice Drug Addiction

speed ice - Important information about the drug Ice, Ice Addiction and Ice Drug Rehab.

	The effects of the drug "Ice" can take years to get over. More often than not, brain damage is permanent.

Is speed, ice, and crank the same drug?
What's the difference between the three? Aren't they all types of methamphetamine? If they are different, what makes them different from each other? I need the info for a stupid health class project.