DiabetesSource

Insulin that generally begins acting within 2 to 4 hours after injection, peaks between 4 and 14 hours (usually between 6 and 8 hours) after injection and remains working for approximately 12 to 18 hours.

Humulin® N (human insulin [rDNA origin] isophane suspension) Eli Lilly and Company A crystalline suspension of human insulin with protamine and zinc providing an intermediate-acting insulin with a slower onset of action and a ...More
Humulin® N Pen Eli Lilly and Company Easy-to-use pen that allows for "dialing your dose" in one-unit increments (up to 60 units).More