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 For example, the instructions could say: âAdults and teenagersâ650 to 1000 milligrams (mg) every 4 to 6 hours as needed.â This DOES NOT mean that you can take 1000 mg every 4 hours! 2  Because the maximum dose for an adult is 4 grams per day, you can take either 650 mg every 4 hours or 1000 mg every 6 hours.