The most commonly reported side effects of concizumab include haemarthrosis, injection site pain, and anti factor ix antibody increased, based on 27 FDA adverse event reports from 2025 to 2025.
Percentages show how often each reaction appears relative to total reports for concizumab.
These are voluntary reports and do not establish that concizumab caused these reactions.
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Seriousness is determined by the reporter, not by OpenClaim.
Other drugs that appear in adverse event reports alongside concizumab. Drugs flagged as a suspected cause appear in the first column. Drugs taken at the same time but not suspected appear in the second.
Taken alongside
Co-occurrence in adverse event reports does not establish a drug interaction. Patients often take multiple medications, and these lists reflect prescribing patterns rather than causal relationships. Consult a healthcare provider about potential drug interactions.
7.4% of concizumab adverse event reports involve female patients and 81.5% involve male patients. The largest age group is adult at 72%. These figures reflect who reports side effects, not underlying risk.
Sex
Age group
Conditions and purposes for which patients were taking concizumab when the adverse event was reported.
Concizumab is sold under the brand name Alhemo.
An upward trend reflects increased FAERS reporting overall, not necessarily increased risk.
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