The most commonly reported side effects of cysteamine include vomiting, eye irritation, and nausea, based on 1,773 FDA adverse event reports from 2004 to 2025.
Percentages show how often each reaction appears relative to total reports for cysteamine.
These are voluntary reports and do not establish that cysteamine caused these reactions.
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Other drugs that appear in adverse event reports alongside cysteamine. 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.
41.7% of cysteamine adverse event reports involve female patients and 39.0% 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 cysteamine when the adverse event was reported.
Showing 15 of 67 indications
Cysteamine is sold under brand names including Cystadrops, Procysbi.
An upward trend reflects increased FAERS reporting overall, not necessarily increased risk.
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