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Mipomersen

Published: July 26, 2026Updated: August 20, 2026

Mipomersen is an injectable antisense oligonucleotide medication used as adjunct therapy for patients with homozygous familial hypercholesterolemia (HoFH), a rare genetic condition causing severely elevated LDL cholesterol that is difficult to control with statins and other lipid-lowering therapies alone. It works by inhibiting the synthesis of apolipoprotein B-100, a key component of LDL particles.

Quick summary

Mipomersen is an injectable medication for homozygous familial hypercholesterolemia that lowers LDL cholesterol by blocking apolipoprotein B-100 synthesis.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 20, 2026Editorial policy

Key facts at a glance

ATC
C10AX11
RxNorm
1367839
Generic
Mipomersen
Class
atc-c10
Brands
Kynamro
Availability
rx
Lactation
unknown
Routes
—
Forms
prefilled syringe
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)tablet
Usual dose
500mg twice daily
Maximum
consult physician
Frequency
every 12 hours
Instructions
Follow physician instructions
Duration limits
as prescribed
Monitoring
standard
pediatric (standard)tablet
Usual dose
250mg twice daily
Maximum
consult physician
Frequency
every 12 hours
Instructions
Follow physician instructions
Duration limits
as prescribed
Monitoring
standard
geriatric (standard)tablet
Usual dose
400mg daily
Maximum
consult physician
Frequency
once daily
Instructions
Follow physician instructions
Duration limits
as prescribed
Monitoring
standard

Overdose information

Important overdose information
Toxic dose: Single dose significantly above therapeutic weekly dose of 200mg that may cause serious toxicity
Chronic overdose: Cumulative dosing above recommended 200mg weekly can lead to liver toxicity and hepatic steatosis
Immediate actions
Discontinue drug, monitor liver function, supportive care, activated charcoal if within 1-2 hours of ingestion
Antidote
No specific antidote available(Supportive care is primary treatment; no proven antidote)
Poison Control: 1-800-222-1222

Special Populations

7 groups
✗

pregnancy

all trimesters
contraindicated
FDA Category
X
Dose Adjustment

avoid

Key Recommendations

do not use during pregnancy. discontinue therapy prior to conception

Monitor

not applicable - avoid use

Use of this medication in this population requires careful consideration of risks and benefits.

✗

lactation

breastfeeding
unsafe
FDA Category
N
Dose Adjustment

avoid

Key Recommendations

do not breastfeed during treatment - excretion in milk unknown

Monitor

not applicable

Use of this medication in this population requires careful consideration of risks and benefits.

?

pediatric_age

children adolescents
unknown
FDA Category
N
Dose Adjustment

not established

Key Recommendations

not recommended - safety and efficacy not established in patients under 18 years

Monitor

not applicable

⚠

geriatric

elderly 65 years
caution
FDA Category
N
Dose Adjustment

no specific adjustment

Key Recommendations

use with caution - monitor for adverse effects including injection site reactions and liver function

Monitor

regular liver function monitoring recommended

Use with caution and monitor for adverse effects.

⚠

renal_impairment

mild moderate
caution
FDA Category
N
Dose Adjustment

no specific adjustment

Key Recommendations

use with caution - limited pharmacokinetic data available

Monitor

monitor renal function periodically

Use with caution and monitor for adverse effects.

⚠

hepatic_impairment

mild
caution
FDA Category
N
Dose Adjustment

no specific adjustment

Key Recommendations

use with caution - mipomersen may increase hepatic fat content

Monitor

regular liver function tests and hepatic imaging recommended

Use with caution and monitor for adverse effects.

✗

hepatic_impairment

moderate severe
unsafe
FDA Category
N
Dose Adjustment

avoid

Key Recommendations

not recommended in moderate to severe hepatic impairment including fatty liver disease

Monitor

not applicable

Use of this medication in this population requires careful consideration of risks and benefits.

Statistics and clinical data

prescribingFDA
2023

FDA approval year

Value:2013

FDA approval date for Mipomersen (Kynamro)

drug_classFDA
2023

Drug class

Value:Antisense oligonucleotide (apoB inhibitor)

Pharmacological classification

usageFDA
2023

Indication

Value:Adjunct treatment for homozygous familial hypercholesterolemia

Primary therapeutic indication

administrationFDA
2023

Route of administration

Value:Subcutaneous injection

Method of drug delivery

Adjunct therapy for homozygous familial hypercholesterolemia (HoFH) in patients who have not responded adequately to other lipid-lowering treatments such as statins and LDL apheresis.

Mipomersen is an antisense oligonucleotide that binds to messenger RNA (mRNA) encoding apolipoprotein B-100, preventing its translation into protein and thereby reducing the production of LDL cholesterol and lipoprotein(a) in the liver.

Administered by subcutaneous injection once weekly. Common side effects include injection site reactions, flu-like symptoms, and liver toxicity with increased hepatic fat content. Requires regular liver function monitoring. Reserved for patients with limited treatment options due to its safety profile.

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 August 20, 2026. · Read our editorial policy