Insulin Glargine vs Insulin Degludec

Head-to-head comparison of Insulin Glargine (Insulin glargine (A21Gly,B31Arg,B32Arg human insulin analog)) and Insulin Degludec (Insulin degludec (desB30, acylated ultra-long-acting insulin analog)) — benefits, dosing, side effects, research data, and where to buy.

PropertyInsulin GlargineInsulin Degludec
CategoryDiabetes & MetabolicDiabetes & Metabolic
Full NameInsulin glargine (A21Gly,B31Arg,B32Arg human insulin analog)Insulin degludec (desB30, acylated ultra-long-acting insulin analog)
Molecular Weight6063.6 Da6103.9 Da
Half-LifeAbout 12-24 hoursMore than 25 hours
Amino Acids5150
Typical Dose0.1-0.2 U/kg once daily0.1-0.2 U/kg once daily
RouteSubcutaneousSubcutaneous
Purity≥98%≥98%
Studies Count130007000
Research StatusApprovedApproved

Insulin Glargine Benefits

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

Insulin Degludec Benefits

  • Ultra-long basal coverage
  • Lower day-to-day variability
  • Reduced nocturnal hypoglycemia
  • Flexible dosing time

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 Degludec Dosing

Inject SC once daily|Titrate to fasting glucose and HbA1c response|May be administered with flexible timing in adults

Insulin Glargine Side Effects

  • Hypoglycemia
  • Injection-site reactions
  • Weight gain

Insulin Degludec Side Effects

  • Hypoglycemia
  • Injection-site reactions
  • Weight gain

Research Overview

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.

Insulin Degludec

Studies highlight prolonged action and lower glycemic variability compared with many other basal insulins. It is frequently used in research on ultra-long basal coverage and hypoglycemia reduction.

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Common Stacking Partners

Insulin Glargine stacks with:

Insulin LisproInsulin Aspart

Insulin Degludec stacks with:

Insulin LisproInsulin Aspart
basal insulinlong-actingfasting glucoseultra-long-acting insulinbasal controllow variability