It often takes a few days.
If you combine that with:
Eliminating all added sugars in food and drink.
Slowly cutting your carbs.
Increasing gentle exercise outdoors.
Talking with your doctors about dosing levels.
Good luck.
Slow-release (long-acting) insulin, like Levemir or similar types, typically works for 12 to 24 hours, depending on the specific insulin and your body's response. However, it may take a few days to see consistent improvements in your morning blood sugar levels as your doctor adjusts your dosage. Be patient and keep Show Full Answer