The most commonly reported side effects of fremanezumab include accidental exposure to product, injection site pain, and migraine, based on 11,017 FDA adverse event reports from 2014 to 2025. 8.2% of reports found the drug to be ineffective.
Percentages show how often each reaction appears relative to total reports for fremanezumab.
These are voluntary reports and do not establish that fremanezumab caused these reactions.
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Other drugs that appear in adverse event reports alongside fremanezumab. Drugs flagged as a suspected cause appear in the first column. Drugs taken at the same time but not suspected appear in the second.
Also suspected
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.
79.0% of fremanezumab adverse event reports involve female patients and 10.0% involve male patients. The largest age group is adult at 83%. These figures reflect who reports side effects, not underlying risk.
Sex
Age group
Conditions and purposes for which patients were taking fremanezumab when the adverse event was reported.
Showing 15 of 83 indications
Fremanezumab is sold under the brand name Ajovy.
An upward trend reflects increased FAERS reporting overall, not necessarily increased risk.
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