Insulin Degludec + Insulin Aspart Premixed

Allopathic
Indications

Insulin Degludec + Insulin Aspart Premixed is indicated for the management of diabetes mellitus in adults and children as follows:

Approved Indications:

  • Type 1 Diabetes Mellitus (T1DM):
    For patients requiring both basal and prandial insulin coverage, especially those who need flexibility in dosing schedule.
  • Type 2 Diabetes Mellitus (T2DM):
    For patients inadequately controlled with oral antidiabetic medications or requiring insulin therapy, including those transitioning from other insulin regimens.

Clinically Accepted Off-Label Uses:

  • Management of gestational diabetes in selected cases under strict clinical supervision.
  • Inpatient hyperglycemia management when both basal and rapid insulin coverage is needed, though continuous monitoring is required.
Dosage & Administration

General Principles:

  • Administer subcutaneously in the thigh, upper arm, or abdomen.
  • Do not mix with other insulin products in the same syringe.
  • Rotate injection sites to reduce lipodystrophy risk.

Adults:

  • Initial dose: Individualized based on previous insulin regimen and blood glucose levels.
  • Twice daily dosing (morning and evening) is commonly recommended with meals.
  • Titration: Adjust based on fasting and postprandial glucose monitoring, typically in increments of 2–4 units.

Pediatrics (≥1 year):

  • Dose individualized according to body weight, prior insulin use, and blood glucose.
  • Close monitoring is essential during therapy initiation and dose adjustments.

Elderly:

  • Initiate at lower doses due to risk of hypoglycemia and possible renal impairment.
  • Frequent glucose monitoring is recommended.

Special Populations:

  • Renal Impairment: Dose adjustment may be required; start lower than usual.
  • Hepatic Impairment: Initiate cautiously; monitor glucose levels frequently.
  • Transition from Other Insulins: Calculate total daily insulin requirement and split according to basal/bolus ratio as per physician guidance.
Mechanism of Action (MOA)

Insulin Degludec is an ultra-long-acting basal insulin analog, providing a steady, peakless insulin level over 24 hours, which reduces fasting glucose levels. Insulin Aspart is a rapid-acting insulin analog that mimics physiological postprandial insulin peaks, reducing post-meal hyperglycemia. The premixed formulation combines these two actions, offering both basal and prandial glucose control. Degludec forms multi-hexamers after injection, releasing insulin slowly, while Aspart remains monomeric for rapid absorption, collectively achieving stable glycemic control throughout the day.

Pharmacokinetics
  • Absorption:
    Aspart: Rapidly absorbed with peak action in 1–3 hours.
    Degludec: Slowly absorbed, providing a flat profile over 24–42 hours.
  • Distribution: Widely distributed in extracellular fluid; protein binding is minimal for Aspart and moderate for Degludec.
  • Metabolism: Both insulin components are metabolized in the liver and kidneys via proteolytic degradation into amino acids.
  • Elimination: Excreted primarily by renal pathways; half-life: Aspart ~1 hour, Degludec ~25 hours.
  • Onset of Action: Aspart ~10–20 minutes; Degludec ~30–90 minutes.
  • Duration: Premixed action covers both prandial spikes and basal needs over 24 hours.
Pregnancy Category & Lactation

 

  • Pregnancy:
    Insulin is the preferred agent for glycemic control in pregnancy; premixed insulin is used under strict monitoring. No teratogenic effects reported with Degludec or Aspart, but data in pregnancy are limited.
  • Lactation:
    Both components are compatible with breastfeeding. Minimal transfer into breast milk; monitor infant for hypoglycemia.
  • Caution: Adjust dose based on frequent glucose monitoring in both pregnancy and lactation.
Therapeutic Class
  • Primary Class: Antidiabetic Agent
  • Subclass: Insulin analog, premixed basal-bolus insulin
Contraindications
  • Known hypersensitivity to Insulin Degludec, Insulin Aspart, or any excipients.
  • Severe hypoglycemia or history of recurrent hypoglycemia.
  • Diabetic ketoacidosis unless concomitant insulin therapy is required.
Warnings & Precautions
  • Hypoglycemia Risk: Monitor glucose frequently; higher risk in renal/hepatic impairment, elderly, or when combined with other hypoglycemic agents.
  • Allergic Reactions: Rare anaphylaxis possible; discontinue if severe reaction occurs.
  • Fluid Retention/Heart Failure: Monitor in patients on thiazolidinediones.
  • Injection Site Reactions: Lipodystrophy may occur; rotate sites.
  • Monitoring: Regular blood glucose and HbA1c assessments; ketone testing if hyperglycemia persists.
Side Effects

Common:

  • Hypoglycemia (most frequent)
  • Injection site reactions: redness, swelling, itching
  • Weight gain

Less Common:

  • Edema
  • Allergic reactions
  • Lipodystrophy at injection sites

Rare/Severe:

  • Severe hypoglycemia with neuroglycopenic symptoms
  • Anaphylactic reactions
Drug Interactions
  • Hypoglycemic agents: Sulfonylureas, meglitinides — may increase hypoglycemia risk.
  • Beta-blockers: May mask hypoglycemia symptoms.
  • CYP450 interaction: Minimal; insulin is degraded proteolytically, not via CYP enzymes.
  • Alcohol: May potentiate or reduce hypoglycemic effect.
  • Corticosteroids, thiazide diuretics: Can reduce insulin effectiveness.
Recent Updates or Guidelines
  • Premixed Degludec/Aspart approved for use in T1DM and T2DM with flexible dosing schedules.
  • Recent guidelines emphasize individualized basal-bolus regimens and glucose monitoring to reduce hypoglycemia risk.
  • Shift toward using Degludec analogs for patients needing ultra-long basal insulin to minimize nocturnal hypoglycemia.
Storage Conditions
  • Temperature: Store 2°C–8°C (refrigerated); do not freeze.
  • Room Temperature Use: Can be kept at ≤30°C for up to 8 weeks.
  • Light Protection: Keep in original pen/vial; protect from direct sunlight.
  • Handling: Roll the pen gently before use; do not shake vigorously.
  • Reconstitution: Not required; solution is clear and ready-to-use.