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Genarc Side Effects

Generic name: antihemophilic factor

Medically reviewed by Last updated on Jun 18, 2024.

Note: This document contains side effect information about antihemophilic factor. Some dosage forms listed on this page may not apply to the brand name Genarc.

Applies to antihemophilic factor: intravenous powder for solution.

Serious side effects of Genarc

Along with its needed effects, antihemophilic factor (the active ingredient contained in Genarc) may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur while taking antihemophilic factor:

More common

Less common or rare

Incidence not known

Other side effects of Genarc

Some side effects of antihemophilic factor may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects.

Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

More common

Less common


Incidence not known

For Healthcare Professionals

Applies to antihemophilic factor: intravenous kit, intravenous powder for injection.


Postmarketing reports: Factor VIII inhibition, hemolytic anemia, post-procedural hemorrhage[Ref]


Postmarketing reports: Hypersensitivity (including anaphylaxis, rash, pruritus)[Ref]

Nervous system

Postmarketing reports: Generalized tonic-clonic seizure[Ref]


1. (2001) "Product Information. Koate-HP (antihemophilic factor)." Bayer

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Some side effects may not be reported. You may report them to the FDA.