<unk>  was a long-acting form of<unk> . It has an onset of 4 to 6 hours, a peak of 14 to 24 hours, and a duration of 28 to 36 hours.<unk> , along with lente<unk> , were discontinued in the US by manufacturers in the mid-2000s. One of the reasons for discontinuation was declining use in favor of NPH<unk>  and other newer<unk>  products. The FDA withdrew approval for<unk>  products by 2011.
Ultralente insulin
Regular insulin
Lente insulin
Insulin aspart
Insulin detemir
Insulin glargine
Pulsatile insulin
Insulin degludec