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Bortezomib

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

Bortezomib is a targeted anticancer medication known as a proteasome inhibitor, used primarily to treat multiple myeloma and mantle cell lymphoma. It works by blocking the 26S proteasome, a cellular complex responsible for breaking down proteins, which disrupts cancer cell function and leads to cancer cell death. This medication is typically administered by subcutaneous or intravenous injection under the supervision of an oncologist.

Quick summary

Bortezomib is a proteasome inhibitor used to treat multiple myeloma and mantle cell lymphoma by disrupting protein regulation in cancer cells.

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

Key facts at a glance

ATC
L01XG01
RxNorm
358258
Generic
Bortezomib
Class
atc-l01
Brands
Boruzu, Velcade
Availability
rx
Lactation
unknown
Routes
—
Forms
injection
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)injection
Usual dose
1.3 mg/m²
Maximum
consult physician
Frequency
twice weekly
Instructions
Follow physician instructions
Duration limits
as prescribed
Monitoring
standard
pediatric (standard)injection
Usual dose
1.3 mg/m²
Maximum
consult physician
Frequency
twice weekly
Instructions
Follow physician instructions
Duration limits
as prescribed
Monitoring
standard
geriatric (standard)injection
Usual dose
1.3 mg/m²
Maximum
consult physician
Frequency
twice weekly
Instructions
Follow physician instructions
Duration limits
as prescribed
Monitoring
standard

Overdose information

Important overdose information
Toxic dose: Dose significantly exceeding recommended 1.3 mg/m² that may cause serious toxicity
Chronic overdose: Cumulative doses exceeding recommended treatment cycles without proper monitoring may lead to severe toxicity
Immediate actions
Discontinue drug immediately, administer supportive care, monitor vital signs, provide intravenous fluids, cardiac monitoring
Antidote
No specific antidote exists(Treatment is supportive and symptomatic; early intervention improves outcomes)
Poison Control: 1-800-222-1222

Special Populations

10 groups
✗

pregnancy

first trimester
unsafe
FDA Category
C
Dose Adjustment

avoid if possible

Key Recommendations

avoid use during pregnancy unless benefits outweigh risks

Monitor

regular fetal monitoring

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

✗

pregnancy

second trimester
unsafe
FDA Category
C
Dose Adjustment

avoid if possible

Key Recommendations

avoid use during pregnancy unless benefits outweigh risks

Monitor

regular fetal monitoring and ultrasound

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

✗

pregnancy

third trimester
unsafe
FDA Category
C
Dose Adjustment

avoid if possible

Key Recommendations

avoid use during pregnancy unless benefits outweigh risks

Monitor

regular fetal monitoring and non-stress tests

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

✗

lactation

breastfeeding
unsafe
FDA Category
N
Dose Adjustment

discontinue breastfeeding

Key Recommendations

bortezomib should not be used during breastfeeding; discontinue nursing for at least 2 months after last dose

Monitor

not applicable

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

⚠

geriatric

elderly
caution
FDA Category
N
Dose Adjustment

no specific adjustment

Key Recommendations

no dose adjustment required based on age alone; monitor for increased sensitivity and adverse events

Monitor

monitor renal and hepatic function; watch for neuropathy and hypotension

Use with caution and monitor for adverse effects.

?

pediatric_age

children
unknown
FDA Category
N
Dose Adjustment

not established

Key Recommendations

not recommended for use in patients under 18 years of age due to limited safety and efficacy data

Monitor

not applicable for pediatric use

✓

renal_impairment

mild moderate
safe
FDA Category
N
Dose Adjustment

no adjustment needed

Key Recommendations

no dose adjustment required for mild to moderate renal impairment

Monitor

monitor renal function regularly

⚠

renal_impairment

severe
caution
FDA Category
N
Dose Adjustment

no specific adjustment

Key Recommendations

can be used in patients with severe renal impairment and those on dialysis; administer after dialysis session

Monitor

monitor renal function and electrolytes closely

Use with caution and monitor for adverse effects.

✓

hepatic_impairment

mild
safe
FDA Category
N
Dose Adjustment

no adjustment needed

Key Recommendations

no dose adjustment required for mild hepatic impairment

⚠

hepatic_impairment

moderate severe
caution
FDA Category
N
Dose Adjustment

reduce starting dose

Key Recommendations

reduce starting dose to 0.7 mg/m2 for moderate to severe hepatic impairment; may adjust further based on tolerability

Monitor

frequent monitoring of liver function and adverse events

Use with caution and monitor for adverse effects.

Statistics and clinical data

prescribingFDA
2023

FDA approval year

Value:2003

FDA approval for Bortezomib (Velcade)

drug_classWHO
2023

Drug class

Value:Proteasome inhibitor

ATC classification for Bortezomib

usageMedical guidelines
2023

Common uses

Value:Multiple myeloma, mantle cell lymphoma

Primary therapeutic indications

mechanismFDA
2023

Mechanism of action

Value:Reversible proteasome inhibition

Molecular mechanism of action

Bortezomib is indicated for the treatment of multiple myeloma (both newly diagnosed and relapsed/refractory disease) and mantle cell lymphoma. It may be used as monotherapy or in combination with other chemotherapy agents.

Bortezomib reversibly inhibits the chymotrypsin-like activity of the 26S proteasome, a large protein complex that degrades ubiquitinated proteins. By blocking this pathway, the drug disrupts normal protein regulation in cancer cells, leading to accumulation of misfolded proteins, disruption of cellular processes, and ultimately cancer cell death.

Common side effects include peripheral neuropathy (which may be dose-limiting), thrombocytopenia, neutropenia, fatigue, and gastrointestinal symptoms. Bortezomib is administered by subcutaneous injection (preferred) or intravenous infusion. Treatment requires regular monitoring of blood counts and nerve function. Patients should be advised to report any numbness, tingling, or pain in the hands or feet promptly.

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