Hydroxocobalamin

openFDA label record#

This page contains supplementary openFDA label data. For the canonical label presentation, use the corresponding DailyMed Structured Product Label.

Verified complete openFDA source JSON (canonical bytes are SHA-256 checked before publication)

Brand name
Hydroxocobalamin
Generic name
HYDROXOCOBALAMIN
Manufacturer
Xseer Pharmaceuticals
Product type
HUMAN PRESCRIPTION DRUG
SPL set ID
3be23e83-4a7f-3854-e063-6294a90acb7a
SPL ID
51e3535b-dc11-abe8-e063-6394a90a0c61
Version
2
Effective date
2026-05-15
Source export date
2026-09-28
Source partition
12
Source file
https://download.open.fda.gov/drug/label/drug-label-0012-of-0014.json.zip
Source object key
raw/openfda/drug-label/2026-09-28/663999d0fe1757c1e2cd13a4799d76d875f663e0bc57701092264ebe7febfc18/drug-label-0012-of-0014.json.zip
Source manifest SHA-256
cd2e66336a5cd2223fa3995098fdbdb84c6a7ee5c0a4addb236ccb22dd1e6887
Import run
20260929T050834Z
Imported at
2026-09-29 06:27:39
Harmonized routes table
Harmonized routes
INTRAMUSCULAR, INTRAVENOUS, SUBCUTANEOUS

Warnings cross-check#

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warnings and cautions

Warnings and Precautions Hypersensitivity reactions, including anaphylactic shock, rash, pruritus, urticaria, and edema, have been reported following parenteral administration of vitamin B12 products, including hydroxocobalamin. Patients with known sensitivity to hydroxocobalamin, cobalt, benzyl alcohol, or any component of the formulation may be at increased risk for serious allergic reactions. This product contains benzyl alcohol as a preservative. Benzyl alcohol has been associated with serious and fatal adverse reactions, including “gasping syndrome,” in premature infants and neonates. Administer under appropriate medical supervision. Monitor patients for signs and symptoms of hypersensitivity during administration. Do not use if the solution is cloudy, discolored, or contains particulate matter. Use aseptic technique during handling and administration. Protect from light. Not for intravenous administration.

Adverse reactions cross-check#

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adverse reactions

Adverse Reactions The following adverse reactions have been reported with hydroxocobalamin injection and other parenteral vitamin B12 products: Hypersensitivity reactions including anaphylactic shock, urticaria, rash, pruritus, flushing, and edema Injection site pain, erythema, and injection site reactions Headache and dizziness Nausea and diarrhea Fever and chills Rare cases of hypokalemia during intensive treatment of severe megaloblastic anemia Serious hypersensitivity reactions, including anaphylaxis, may occur in sensitive patients. To report suspected adverse reactions, contact Xseer Pharmaceuticals at (888) 658-8005 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch

Reported adverse events (FAERS/openFDA)#

Adverse event summaries are temporarily unavailable. Other product information remains available.