This eliminates many nighttime lows. These significant timing differences between Humalog and Regular often require that doses be modified. Rarely can you simply replace Regular with Humalog. Before starting on this new insulin, doses should be carefully discussed with your physician. Due to Humalog's fast onset of action, routine testing is recommended before each meal, at 2 to 2 hours after eating, and at any time unusual symptoms occur.
Extra testing can prevent many problems caused by the new insulin.
And this extra testing can help you avoid severe hypoglycemia by allowing you and your physician to quickly adjust insulin doses as needed. No longer do you need to wait 30 to 60 minutes after an injection to eat meals as advised with Regular. Depending on premeal blood sugars, Humalog can be injected 20 minutes before a meal, or with the first bite of food. Remember, though, that delayed eating is the most frequent cause of severe hypoglycemia. Because blood sugars fall more swiftly with Humalog, any delay in eating after an injection can quickly become critical.