Insulins or insulin analogs with a very short half-life are typically used:

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Insulins with a short half-life are used to regulate elevated blood sugars quickly. They are typically used before meals (preprandially, to manage postprandial hyperglycemia) and as part of sliding-scale insulin regimens, to bring elevated sugars back to normal within a few hours. Long-acting insulins are typically used at supper or bedtime to control blood sugars overnight. Insulin is a growth hormone. As a consequence, all insulins contribute to weight gain (not weight loss).

Insulins or Insulin Analogs with a Very Short Half-Life Are