Final answer:
Regular insulin, such as Humalin R, is typically administered before a meal to help control blood glucose levels. It is recommended to wait about 15-30 minutes after injecting regular insulin before starting to eat.
Step-by-step explanation:
Regular insulin, such as Humalin R, is a short-acting insulin that is typically administered before a meal to help control blood glucose levels. The timing of when you should eat after administering the insulin will depend on individual factors, such as the person's blood glucose level and the type of meal they are planning to consume. As a general guideline, it is recommended to wait about 15-30 minutes after injecting regular insulin before starting to eat. This allows the insulin enough time to start working and helps to synchronize the absorption of glucose from the meal with the action of insulin.