When you are dealing with high blood sugar, you will want to know how to lower blood sugar quickly. It is important to know why your number is high before you look for a solution.
It could be that you ate a very heavy meal, did not take your medication (if you are diabetic and take medication), you are dealing with an illness or undue stress, or you are not getting enough exercise.
For those who are diabetic and have insulin on hand, this is the fastest way to lower blood glucose, but not everyone has access to insulin. Also, you have to know when you need to inject insulin and what the right dose is to make a correction.