Ultra Rapid Lispro (URLi) Accelerates Insulin Lispro Absorption and Insulin Action vs Humalog® Consistently Across Study Populations: A Pooled Analysis of Pharmacokinetic and Glucodynamic Data

Clin Pharmacokinet. 2021 Nov;60(11):1423-1434. doi: 10.1007/s40262-021-01030-0. Epub 2021 May 27.


Background and objective: Ultra rapid lispro (URLi) is a novel insulin lispro formulation developed to more closely match physiological insulin secretion and improve postprandial glucose control. This pooled analysis compared the pharmacokinetics and glucodynamics between URLi and Humalog® in healthy subjects and patients with type 1 or type 2 diabetes mellitus.

Methods: The analysis included four randomized, double-blind, crossover, single-dose studies (healthy subjects [n = 74], patients with type 1 diabetes [n = 78], and type 2 diabetes [n = 38]) evaluating subcutaneous doses of 7, 15, or 30 U of URLi and Humalog during an 8- to 10-h euglycemic clamp procedure.

Results: The pooled analysis showed an ~ 5-min faster onset of appearance, an ~8-fold greater exposure in the first 15 min, a 43% reduction in exposure beyond 3 h, and a 68-min shorter exposure duration with URLi vs Humalog across all study populations and dose range. Compared with Humalog, URLi had a 10-min faster onset of action, a 3-fold greater insulin action in the first 30 min, a 35% reduction in insulin action beyond 4 h, and a 44-min shorter duration of action across all populations and dose range. Overall exposure and insulin action were similar between URLi and Humalog for each dose level and study population.

Conclusions: Across the studied populations and dose range, URLi consistently demonstrated a faster absorption, reduced late exposure, and overall shorter exposure duration compared with Humalog. Similarly, URLi demonstrated earlier insulin action while reducing late insulin action and shorter insulin action compared with Humalog across the study populations and dose range.

Clinical trial registration: NCT02942654 (registered: 21 October, 2016), NCT03286751 (registered: 15 September, 2017), NCT03166124 (registered: 23 May, 2017), and NCT03305822 (registered: 5 October, 2017).

Publication types

  • Meta-Analysis
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Blood Glucose
  • Cross-Over Studies
  • Diabetes Mellitus, Type 1* / drug therapy
  • Diabetes Mellitus, Type 2* / drug therapy
  • Humans
  • Hypoglycemic Agents
  • Insulin
  • Insulin Lispro
  • Randomized Controlled Trials as Topic


  • Blood Glucose
  • Hypoglycemic Agents
  • Insulin
  • Insulin Lispro

Associated data

  • ClinicalTrials.gov/NCT02942654
  • ClinicalTrials.gov/NCT03286751
  • ClinicalTrials.gov/NCT03166124
  • ClinicalTrials.gov/NCT03305822