Dr. Raphael Mechoulam, NORML, High Times and Omni magazines (September 1982) all indicate that if marijuana were legal it would immediately replace 10-20% of all pharmaceutical prescription medicines (based on research through 1976). And probably, Mechoulam estimates, 40-50% of all medicines, including patent medicines, could contain some extract from the cannabis plant when fully researched.
http://www.jackherer.com/chapter06.html

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