Diazoxide is only med prescribed to help hypoglycemia caused by endocrine tumors. If cornstarch worked they would have diabetics use it in low circumstances. The issue with endocrine tumors is insulin is being dumped by pancreas all the time even when not eating into system. Consequently liver never releases glycogen except when you eat to raise blood sugar. Because normally insulin release tells liver blood sugar is high don't release any glycogen to raise it.