Insulin Lispro vs Insulin Glargine

Head-to-head comparison of Insulin Lispro (Insulin lispro (B28-Lys, B29-Pro human insulin analog)) and Insulin Glargine (Insulin glargine (A21Gly,B31Arg,B32Arg human insulin analog)) — benefits, dosing, side effects, research data, and where to buy.

Research Score

PropertyInsulin LisproInsulin Glargine
CategoryDiabetes & MetabolicDiabetes & Metabolic
Full NameInsulin lispro (B28-Lys, B29-Pro human insulin analog)Insulin glargine (A21Gly,B31Arg,B32Arg human insulin analog)
Molecular Weight5808.0 Da6063.6 Da
Half-LifeAbout 1 hourAbout 12-24 hours
Amino Acids5151
Typical Dose0.05-0.2 U/kg per meal0.1-0.2 U/kg once daily
RouteSubcutaneousSubcutaneous
Purity≥98%≥98%
Studies Count1200013000
Research StatusApprovedApproved

Insulin Lispro Benefits

  • Rapid postprandial glucose control
  • Flexible premeal timing
  • Predictable onset of action
  • Useful in basal-bolus regimens

Insulin Glargine Benefits

  • Once-daily basal coverage
  • Smooth action profile
  • Lower nocturnal hypoglycemia risk
  • Improves fasting glucose control

Insulin Lispro Dosing

Inject SC 0-15 minutes before meals|Adjust dose to carbohydrate intake and premeal glucose|Often paired with a basal insulin

Insulin Glargine Dosing

Inject SC once daily at the same time each day|Titrate every 3-4 days to fasting glucose targets|Can be combined with prandial insulin

Insulin Lispro Side Effects

  • Hypoglycemia
  • Weight gain
  • Injection-site reactions

Insulin Glargine Side Effects

  • Hypoglycemia
  • Injection-site reactions
  • Weight gain

Research Overview

Insulin Lispro

Clinical studies show faster onset and shorter duration than regular insulin, improving post-meal glucose control. It is a standard comparator in diabetes pharmacology and closed-loop insulin-delivery research.

Insulin Glargine

Clinical and translational studies support its use as a basal comparator because of prolonged absorption and stable glycemic control. It is heavily used in basal-bolus regimen research and insulin-delivery optimization studies.

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Common Stacking Partners

Insulin Lispro stacks with:

Insulin GlargineInsulin Degludec

Insulin Glargine stacks with:

Insulin LisproInsulin Aspart
rapid-acting insulinprandial controlglucose regulationbasal insulinlong-actingfasting glucose