Cannabinoid-containing plant extracts as neuroprotective agents

1. A method of treating a patient suffering from an acquired brain injury consisting essentially of administering to said patient a therapeutically effective amount of a pharmaceutical formulation consisting essentially of an extract of Cannabis sativa , and wherein the extract of Cannabis sativa is obtained by supercritical or subcritical extraction with CO2, and is either (a) a Cannabis sativa L. plant extract where a major cannabinoid is tetrahydrocannabinol (THC), and the extract consists essentially of i) from 67.3-87.7% (w/w) of cannabinoid-containing components consisting essentially of the major cannabinoid; a minor cannabinoid; and one or more other cannabinoids; and ii) from 12.3-32.7% (w/w) of non-cannabinoid components consisting essentially of terpenes; sterols; triglycerides; alkanes; squalene; tocopherol; carotenoids; chlorophyll; flavonoid; glycosides and alkaloids, or (b) a Cannabis sativa L. plant extract where a major cannabinoid is cannabidiol (CBD) and the extract consists essentially of i) from 65.8-95.5% (w/w) of cannabinoid-containing components consisting essentially of the major cannabinoid; a minor cannabinoid; and one or more other cannabinoids; and ii) from 7.5-34.2% (w/w) of non-cannabinoid components consisting essentially of terpenes; sterols; triglycerides; alkanes; squalene; tocopherol; carotenoids; chlorophyll; flavonoid; glycosides and alkaloids, wherein the acquired brain injury is effectively treated.