Comparative Pharmacology
Head-to-head clinical analysis: NOVOLOG MIX 70 30 FLEXPEN versus NOVOLOG PENFILL.
Peer-Reviewed Evidence
Head-to-head clinical analysis: NOVOLOG MIX 70 30 FLEXPEN versus NOVOLOG PENFILL.
NOVOLOG MIX 70/30 FLEXPEN vs NOVOLOG PENFILL
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Insulin aspart is a rapid-acting insulin analog that lowers blood glucose by stimulating peripheral glucose uptake, especially by skeletal muscle and fat, and by inhibiting hepatic glucose production. It replaces endogenous insulin and has a faster onset and shorter duration than regular human insulin due to altered amino acid sequence (substitution of proline at position 28 with aspartic acid).
Insulin aspart is a rapid-acting recombinant human insulin analog. It lowers blood glucose by binding to insulin receptors on skeletal muscle and adipose tissue, promoting glucose uptake, and inhibiting hepatic glucose production via glycogenolysis and gluconeogenesis.
Subcutaneous injection only. Initial total daily insulin dose: 0.5 to 1 unit/kg/day. Administer 70% intermediate-acting insulin aspart protamine and 30% rapid-acting insulin aspart. Typically given twice daily within 15 minutes before meals. Dose individualize based on glycemic goals.
Subcutaneous injection: 0.5-1 unit/kg/day divided into multiple doses (e.g., basal-bolus regimen). Individualized based on glucose monitoring.
None Documented
None Documented
0.5-1 hour for the rapid-acting insulin aspart component and 8-10 hours for the protamine-crystallized insulin aspart component. Clinical context: biphasic profile allows for both prandial and basal coverage.
~5-7 minutes (free insulin aspart); clinical effect duration correlates with SC absorption half-life ~1-2 hours
Renal elimination of degradation products. Approximately 30-40% of insulin dose is excreted unchanged in urine; the remainder is metabolized primarily in liver and kidney and excreted as metabolites.
Renal: 60-80% as metabolites; unchanged drug excreted minimally. Fecal: <10%
Category C
Category C
Insulin Analog
Insulin Analog