Insulin type	Onset	Peak	Duration
Long-acting
Detemir (Levemir)	3 to 4 hours	6 to 8 hours	6 to 23 hours
Glargine (Lantus)	90 minutes	None	24 hours
Intermediate-acting
NPH (Humulin N)	1 to 2 hours	4 to 10 hours	14 or more hours
Short-acting
Aspart (Novolog)	15 minutes	1 to 3 hours	3 to 5 hours
Glulisine (Apidra)	15 to 30 minutes	30 to 60 minutes	4 hours
Lispro (Humalog)	15 minutes	30 to 90 minutes	3 to 5 hours
Regular	30 to 60 minutes	2 to 4 hours	5 to 8 hours
Mixed*
NPH/lispro or aspart	15 to 30 minutes	Dual	14 to 24 hours
NPH/regular	30 to 60 minutes	Dual	14 to 24 hours