The most commonly reported side effects of foslevodopa include fall, infusion site reaction, and on and off phenomenon, based on 1,460 FDA adverse event reports from 2024 to 2025. 3.7% of reports found the drug to be ineffective.
Percentages show how often each reaction appears relative to total reports for foslevodopa.
These are voluntary reports and do not establish that foslevodopa caused these reactions.
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Other drugs that appear in adverse event reports alongside foslevodopa. 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.
37.5% of foslevodopa adverse event reports involve female patients and 52.3% involve male patients. The largest age group is elderly at 59%. These figures reflect who reports side effects, not underlying risk.
Sex
Age group
Conditions and purposes for which patients were taking foslevodopa when the adverse event was reported.
Foslevodopa is sold under the brand name Vyalev.
An upward trend reflects increased FAERS reporting overall, not necessarily increased risk.
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