Thuoc Lao (thuốc lào) is a tobacco grown and consumed exclusively in Vietnam. It is most commonly smoked after a meal on a full stomach to "aid in digestion", or along with green tea or local beer (most commonly the cheap "bia hoi"). A "hit" of thuoc lao is followed by a flood of nicotine to the bloodstream inducing strong dizziness that last several seconds. It should be said however that even heavy smokers have had trouble with the intense volume of smoke and that side effects include nausea and vomiting, as with any tobacco-related experience.