Carbs. Have a piece of sweets or drink some orange juice. More importantly - why are you hypoglycemic? Are you taking medication? If not - do we have a confirmed diagnosis of hypoglycemia? What causes your sugar to go low? Dietary habits? Consider an evaluation with an endocrinologist if you truly become hypoglycemic (frequently) without meds.
Get evaluated. Why are you hypoglycemic? How do you know you are hypoglycemic? See your doctor to confirm and evaluate the cause of hypoglycemia. If found, fix that and you will be ok.