Answers: If you are diabetic you should already know the answer to this. A BGL of 300 is high but not emergency dignified. Call the doctor that manages this and ask for proposal, you should already know what to do so this question make me suspicious.
ask yourself why your sugar level is so lofty? What have you be eating? when did you rob your meds? have you be doing your walking?
300 is not a dangerous height other than the defile it is doing to your tiny nerve ending, blood vessels, toes, fingers, and eyes, not to articulate what it is doing to your heart, liver and kidneys!! It will merely make you grouchy, tight-fisted, nasty, and weepy. And it will also probably donate you a nasty headache.
Get near the program!! You know what to do if you are checking your glucose numbers!
Do not rely on outside help too much. By trying to regain control of your blood glucose by yourself, you show initiative and nouns. Educators and doctors appreciate this very much. You can do it! Come on.