In addition to drinking water, another good thing to consume when you’re trying to get rid of the coffee jitters is to eat a banana. This can help calm your stomach and help counteract some of the unwanted effects of caffeine. Caffeine is known to dehydrate the body and throw off the body’s balance of electrolytes. Bananas make an ideal snack after drinking too much caffeine since they're packed with calcium, potassium and help regulate your blood sugar! Remember to put bananas on your grocery list - it's one of the best answers for how to quickly get rid of caffeine jitters.