Its best to establish your bolus insulin dosing after carefully calculating the carbs in the meal you have taken. As i have mentioned above 1:10 ratio for insulin dose: carbs is widely accepted. However i have seen this trend in many clients – insulin sensitivity is comparatively less in the morning as compared to the evening- due to which clients move from taking 1 unit insulin for 10 grams carbs in the morning to 1 unit insulin for 20 grams of carbs at night. However yours may not be the same case – hence an ideal insulin dose will have to be worked on through individualization and adjustment depending on your insulin resistance, muscle profile and fat %. The two most popular methods to set your ratios have been the 500 rule and weight sensitive dosing. Stay tuned until tomorrow to hear more about the same.