The most commonly reported side effects of casimersen include product dose omission issue, no adverse event, and poor venous access, based on 834 FDA adverse event reports from 2019 to 2025.
Percentages show how often each reaction appears relative to total reports for casimersen.
These are voluntary reports and do not establish that casimersen 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 casimersen. 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.
0.5% of casimersen adverse event reports involve female patients and 98.6% involve male patients. The largest age group is adolescent at 38%. These figures reflect who reports side effects, not underlying risk.
Sex
Age group
Conditions and purposes for which patients were taking casimersen when the adverse event was reported.
Casimersen is sold under the brand name Amondys 45.
An upward trend reflects increased FAERS reporting overall, not necessarily increased risk.
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