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Insulin Family beginner

Premixed Insulin 75/25

Fixed-ratio premixed insulin containing 75% intermediate-acting protamine lispro and 25% rapid-acting insulin lispro.

By Encyclopeptide Editorial | 1 min read
insulin premixed lispro protamine diabetes

Chemical Identity

PropertyValue
Product NameHumalog Mix 75/25
Components75% protamine lispro + 25% insulin lispro
RouteSubcutaneous
Onset15-30 minutes

Structure

Premixed 75/25 combines two physically distinct insulin species: protamine lispro crystalline precipitate for intermediate coverage and free insulin lispro for prandial control.

Clinical Applications

Indicated for type 1 and type 2 diabetes requiring both basal and prandial insulin. Provides convenient twice-daily dosing with meals.

Pharmacokinetics

  • Onset: 15-30 minutes
  • Peak 1 (lispro): 0.5-1.5 hours
  • Peak 2 (protamine): 4-8 hours
  • Duration: 12-18 hours

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