Insulin Aspart vs Insulin Glargine

Head-to-head comparison of Insulin Aspart (Insulin aspart (B28-Asp 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 AspartInsulin Glargine
CategoryDiabetes & MetabolicDiabetes & Metabolic
Full NameInsulin aspart (B28-Asp human insulin analog)Insulin glargine (A21Gly,B31Arg,B32Arg human insulin analog)
Molecular Weight5825.8 Da6063.6 Da
Half-LifeAbout 1-3 hoursAbout 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 Count1100013000
Research StatusApprovedApproved

Insulin Aspart Benefits

  • Fast post-meal glucose lowering
  • Predictable onset
  • Flexible mealtime administration
  • Compatible with pump therapy

Insulin Glargine Benefits

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

Insulin Aspart Dosing

Inject SC immediately before meals|Titrate using glucose monitoring and carbohydrate intake|Can be used in insulin pumps or basal-bolus regimens

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 Aspart Side Effects

  • Hypoglycemia
  • Injection-site reactions
  • Weight gain

Insulin Glargine Side Effects

  • Hypoglycemia
  • Injection-site reactions
  • Weight gain

Research Overview

Insulin Aspart

Research consistently shows faster onset and earlier peak action than regular human insulin. It is commonly studied for meal-time glycemic control and pump-based insulin delivery.

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 Aspart stacks with:

Insulin GlargineInsulin Degludec

Insulin Glargine stacks with:

Insulin LisproInsulin Aspart
rapid-acting insulinmeal coveragepump-compatiblebasal insulinlong-actingfasting glucose