Type of insulin	Time of onset	Duration of action
Basal insulin
Glargine (Lantus)	1 to 2 hours	24 hours
Detemir (Levemir)	1 to 2 hours	18 to 24 hours
Isophane (NPH)*	1 to 2 hours	10 to 20 hours
Nutritional and correctional insulin
Lispro (Humalog), aspart (Novolog), glulisine (Apidra)†	5 to 15 minutes	3 to 6 hours
Regular human insulin‡	1 to 2 hours	6 to 10 hours