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Amphetamines
Amphetamines are powerful stimulants. They improve the synaptic activity of two important...
Marijuana Addiction
Marijuana or cannabis is a plant which produces THC, a psychoactive. It is used by indivi...

Sativa and Indica are the two primary species of cannabis. Sativa often helps to improve the user?s moods and also relieves pain. They may also have hallucinogenic effects. Indica is the more potent forms of the two.