State Marijuana Laws. In November 1996, California became the first state to legalize marijuana for medicinal purposes. Currently, there are: 1  22 states have legalized marijuana for medicinal purposes.2  16 states have decriminalized personal possession of marijuana.onflict between State Law and Federal Law. Federal law clearly conflicts with many state laws concerning marijuana. Under the Preemption Clause of the Constitution, a federal law will always trump a state law.
mg is milligram, a measure of weight. Liter is a measure of volume. A liter of WATER would weigh 1 million milligrams- but a liter of alcohol would weigh about 700,000 mg- since alcohol is lighter than water. A liter of mercury would weigh MUCH more, since it is heavier than water.
1 Adultsâ2000 milligrams (mg) every 12 hours. 2  ChildrenâUse and dose must be determined by your doctor. 3  For oral dosage form (tablets): 4  Adults, teenagers, and children weighing 40 kilograms (kg) or moreâ250 to 500 milligrams (mg) every 8 hours, or 500 to 875 mg every 12 hours.