The most commonly reported side effects of romiplostim include platelet count decreased, off label use, and platelet count abnormal, based on 14,653 FDA adverse event reports from 2008 to 2025. 6.5% of reports found the drug to be ineffective.
Percentages show how often each reaction appears relative to total reports for romiplostim.
These are voluntary reports and do not establish that romiplostim caused these reactions.
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Other drugs that appear in adverse event reports alongside romiplostim. 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.
43.6% of romiplostim adverse event reports involve female patients and 37.8% involve male patients. The largest age group is adult at 50%. These figures reflect who reports side effects, not underlying risk.
Sex
Age group
Conditions and purposes for which patients were taking romiplostim when the adverse event was reported.
Showing 15 of 272 indications
Romiplostim is sold under the brand name Nplate.
An upward trend reflects increased FAERS reporting overall, not necessarily increased risk.
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