Intermediate-Acting Insulin (Peak Activity Usually Between 4-12 Hours)
Isophane insulin suspension (NPH, NPH Iletin II, Humulin N, Novolin N) - 30min before 1st meal of day. 2nd smaller dose may be prescribed 30min before supper/ @ bedtime.
Insulin zinc suspension (Lente Iletin II, Lente L, Humulin L, Novolin N) - 30min before breakfast. Some require another 30min for supper/bedtime.