Type of insulinOnsetPeak (hours)Duration (hours)Cost*
Rapid-acting
Aspart (NovoLog)5 minutes1 to 23 to 4$84
Lispro (Humalog)5 minutes1 to 23 to 478
Lispro pen5 minutes1 to 23 to 431 (3 ml)
Regular insulin injection15 minutes3 to 46 to 846
Intermediate-acting
Insulin isophane suspension (neutral protamine Hagedorn)1 hour6 to 81235
Insulin zinc suspension (Lente)1 hour6 to 81233
Long-acting
Glargine1 hourNone2475
Glargine pen†1 hourNone2430 (3 ml)