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Insulin Degludec

Published: July 26, 2026Updated: July 26, 2026

Insulin Degludec is a long-acting basal insulin analog that provides a prolonged duration of action for at least 42 hours, improving glycemic control in adults with diabetes.

Quick summary

Insulin Degludec is an ultra-long-acting basal insulin that helps manage blood sugar levels in people with diabetes by providing steady glucose control over 24 hours or more.

Medically reviewed by WellAlly Editorial TeamLast reviewed July 26, 2026Editorial policy
BOXED WARNING

This medication carries a boxed (black box) warning — the strongest type of FDA warning. Review the full prescribing information before use.

Key facts at a glance

ATC
A10AE06
RxNorm
1670007
Generic
Insulin Degludec
Class
atc-a10
Brands
Tresiba, Xultophy
Availability
rx
Lactation
unknown
Routes
—
Forms
solution
Regions
US, EU, CN, JP
Monitoring
—

This page is for informational purposes only.

Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.

Dosage and administration

adult (standard)subcutaneous injection
Usual dose
10 units once daily (0.1-0.2 units/kg)
Maximum
consult physician
Frequency
once daily
Instructions
Follow physician instructions
Duration limits
as prescribed
Monitoring
standard
pediatric (standard)subcutaneous injection
Usual dose
0.2-0.3 units/kg once daily
Maximum
consult physician
Frequency
once daily
Instructions
Follow physician instructions
Duration limits
as prescribed
Monitoring
standard
geriatric (standard)subcutaneous injection
Usual dose
0.1 units/kg once daily (typically 10 units)
Maximum
consult physician
Frequency
once daily
Instructions
Follow physician instructions
Duration limits
as prescribed
Monitoring
standard

Overdose information

Important overdose information
Toxic dose: Doses exceeding 2-3 times the patient's normal daily dose may cause significant hypoglycemia
Chronic overdose: Repeated administration of doses higher than prescribed leading to persistent hypoglycemia
Immediate actions
Administer oral glucose if conscious, intravenous dextrose if unconscious, monitor blood glucose continuously
Antidote
Dextrose (Glucose)(Highly effective when given promptly)
Poison Control: 1-800-222-1222

Special Populations

12 groups
⚠

pregnancy

first trimester
caution
FDA Category
C
Dose Adjustment

individualize based on glycemic control

Key Recommendations

insulin is preferred therapy for diabetes in pregnancy; degludec may be used when benefits outweigh risks

Monitor

frequent blood glucose monitoring and fetal monitoring

Use with caution and monitor for adverse effects.

⚠

pregnancy

second trimester
caution
FDA Category
C
Dose Adjustment

individualize based on glycemic control

Key Recommendations

continue insulin therapy for optimal glycemic control

Monitor

frequent blood glucose monitoring and fetal growth assessments

Use with caution and monitor for adverse effects.

⚠

pregnancy

third trimester
caution
FDA Category
C
Dose Adjustment

individualize; may need dose adjustment

Key Recommendations

insulin requirements may increase in third trimester

Monitor

frequent blood glucose monitoring and fetal monitoring

Use with caution and monitor for adverse effects.

✓

lactation

breastfeeding
safe
FDA Category
N
Dose Adjustment

no adjustment needed

Key Recommendations

compatible with breastfeeding; insulin does not pass into breast milk in significant amounts

Monitor

monitor maternal blood glucose

⚠

geriatric

elderly 65 years
caution
FDA Category
N
Dose Adjustment

start with lower dose and titrate slowly

Key Recommendations

increased risk of hypoglycemia; consider starting at 50% of typical starting dose

Monitor

frequent blood glucose monitoring especially during titration

Use with caution and monitor for adverse effects.

⚠

pediatric_age

children 1 5 years
caution
FDA Category
C
Dose Adjustment

weight-based dosing starting at 0.1-0.2 units/kg once daily

Key Recommendations

approved for type 1 diabetes in children 1 year and older; individualize dosing

Monitor

frequent blood glucose monitoring including overnight

Use with caution and monitor for adverse effects.

✓

pediatric_age

children 6 12 years
safe
FDA Category
C
Dose Adjustment

weight-based dosing typically 0.1-0.3 units/kg once daily

Key Recommendations

approved for type 1 diabetes; individualize based on patient needs

Monitor

regular blood glucose monitoring

✓

pediatric_age

adolescents 13 17 years
safe
FDA Category
C
Dose Adjustment

weight-based dosing typically 0.1-0.3 units/kg once daily

Key Recommendations

approved for type 1 and type 2 diabetes in adolescents

Monitor

regular blood glucose monitoring

⚠

renal_impairment

mild to moderate
caution
FDA Category
N
Dose Adjustment

no specific dose adjustment required but may need dose reduction

Key Recommendations

no specific starting dose adjustment; monitor for hypoglycemia as risk may be increased

Monitor

frequent blood glucose monitoring

Use with caution and monitor for adverse effects.

⚠

renal_impairment

severe
caution
FDA Category
N
Dose Adjustment

consider dose reduction

Key Recommendations

use with caution; reduced insulin clearance may require dose reduction

Monitor

frequent blood glucose monitoring

Use with caution and monitor for adverse effects.

⚠

hepatic_impairment

mild to moderate
caution
FDA Category
N
Dose Adjustment

no specific dose adjustment required

Key Recommendations

no starting dose adjustment needed; hepatic impairment may affect glucose metabolism

Monitor

blood glucose monitoring

Use with caution and monitor for adverse effects.

⚠

hepatic_impairment

severe
caution
FDA Category
N
Dose Adjustment

may require dose reduction

Key Recommendations

use with caution; severe hepatic impairment may reduce insulin requirements

Monitor

frequent blood glucose monitoring

Use with caution and monitor for adverse effects.

Statistics and clinical data

drug_classWHO
2023

Drug class

Value:Long-acting insulin analog

Basal insulin analog for glucose control

prescribingFDA
2023

FDA approval year

Value:2015

Tresiba FDA approval

usageMedical guidelines
2023

Common uses

Value:Type 1 and Type 2 diabetes mellitus

Indicated for glycemic control in diabetes

prescribingFDA
2023

Dosing frequency

Value:Once daily

Ultra-long acting basal insulin

Treatment of diabetes mellitus in adults requiring basal insulin for glycemic control. May be used as monotherapy or in combination with other glucose-lowering agents including oral antidiabetics and rapid-acting insulins.

Insulin Degludec binds to insulin receptors on target cells, stimulating peripheral glucose uptake and suppressing hepatic glucose production. It forms a depot of soluble multi-hexamers at the injection site, providing a flat and stable glucose-lowering effect over an extended period.

Administered subcutaneously once daily at any time of day. Requires regular blood glucose monitoring and dose adjustment based on individual needs. Can cause hypoglycemia, weight gain, and injection site reactions. Should not be used in patients with hypoglycemia or those with known hypersensitivity to insulin degludec. Always follow proper injection technique and storage requirements.

Contraindications

Conditions and patient states where this medication should be avoided or used with caution.

Do not use (1)

ABSOLUTEhypersensitivity

Known allergy to this medication or its components

Use caution (1)

RELATIVEpregnancy

Consult healthcare provider for benefits vs risks assessment

Official drug label

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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed July 26, 2026. · Read our editorial policy