Marijuana is a naturally occurring plant exactly like Cinchona bark from which we get Quinine, antimalarial drug. Unfortunately marijuana is notoriously abused as recreational drug; Mind is not ready to accept that such a dangerous drug can have any beneficial effects. But no one can deny the fact that it has been approved by government of united stated in certain states for medicinal purpose. As researchers claim that this naturally occurring plant can kill cancer cells, can stop seizures, take care of nausea and pain after chemotherapy. Furthermore new research is showing its pharmacological actions in treatment of multiple sclerosis The.plant’s botanical name is Cannabis Sativa. The chemical which give Marijuana its addictive, recreational and medicinal properties is called Cannabinoid. In late 90’s scientists were aware of cannabinoid receptors in the brain.(Jia, 2006) These cannabinoids chemicals are actually capable of destroying cancer cells via a process called apoptosis.(Athanasiou, 2007) In 1996, California voters passed proposition 215 about Marijuana legalization.This Proposition 215 allowed medical specialist to prescribe Marijuana to those qualified patient which they judged would be benefited from this natural growing weed. Since this time debate is going on among the lawful citizens of United States about whether or not this naturally occurring beneficial plant could be approved as prescription drug. Debate is becoming stronger and stronger about the approval of medicine in certain states why not all over United States. For long time responsible agencies have been presenting the case that Marijuana is bad because it kills brain cell, it causes Brain neurotransmitters to be disrupted and cause malfunctioning of human brain. The problem with the assertion the government is making is that it is false. There is no evidence in medical literature which can prove that Marijuana kills brain cells. Actually there is exactly