Question: how much insulin for 20 carbs?
Answer: For example, if you take a total of 25 units of insulin in a typical day, each unit of insulin should cover approximately 20 grams of carbohydrate (500 ÷ 25 = 20). If you take 60 units daily, your I:C ratio would be 1 unit per 8 grams of carb (500 ÷ 60 ≅ 8).