Wheres Uncle. Herb's Unc/e ! RGAV Mariuano has intoxicating effects and may be hobik forming and addictive. Marijuana impairs concentrations. coordination, and judgement. Do not operate a vehicdle or mochinery under its infieence. There are health rbs owoxlated with couumption of mariucaa For use only by adults twenty-one and older. Keep out of the reach of children. Masuana should not be used by women who are pregnant or breost feeding.