The potent antiviral properties in lime/lemon can killcholera bacilliwithin a very short period of time. Drink one part juice and one part water regularly, especially during an epidemic. Limes grown or purchased in the States are usually sour. Sweet varieties with less citric acid are more common in Asian regions. Make sure when picking or purchasing that theyre bright green and completely ripe, as those have the most antioxidant benefits. Keep them out of the sun or theyll turn yellow and lose their bright flavor.