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FDA FAERS Drug Adverse Events Summary
x402
FDA FAERS Drug Adverse Events Summary is a paid API for AI agents from payai.agentstools.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-11).
Returns aggregate adverse event data for a named drug from the FDA FAERS database, including top reported reactions, serious/death-flagged fractions, and demographic breakdowns.
Price / call$0.02
Success—
StatusUnknown
How this service works
Adverse-event summary for a drug from the FDA FAERS database by name. Returns the top reported reactions, the serious and death-flagged fractions and a demographic breakdown as aggregate counts. Informational, not medical advice.
Output
Returns aggregate adverse event data from FDA FAERS for the queried drug, including: a ranked list of the most frequently reported adverse reactions, the proportion of reports flagged as serious, the proportion flagged as deaths, and a demographic breakdown (e.g. by age, sex) as aggregate counts. Response is informational and not medical advice.
Example use cases
Pharmacist reviewing patient medication safety
“A patient just asked me about switching from atorvastatin to a generic alternative. Can you pull the FDA adverse event data for atorvastatin so I can compare the serious event rates and demographic breakdown with what's being reported? I want to make sure we're making an informed decision.”
Researcher analyzing drug safety across populations
“I'm studying whether certain age groups experience higher rates of serious adverse events with ACE inhibitors. Can you get me the FDA FAERS demographic breakdown for lisinopril — specifically how many serious and fatal events were reported across different age categories?”
Patient advocate preparing for medical consultation
“My doctor recommended starting me on metoprolol, but I want to go in informed. Can you show me the top adverse reactions reported to the FDA for this drug, what percentage were flagged as serious, and whether certain demographics seem to report problems more often?”
Technical details
Endpoint
GEThttps://payai.agentstools.dev/drug/adverse-events?utm_source=zero.xyzWhen to prefer
Use this endpoint when an agent needs factual, FDA-sourced pharmacovigilance data about a specific drug's adverse event profile — particularly when the user asks about reported side effects, seriousness rates, or demographic patterns from real-world post-market surveillance. Prefer over general web search when structured, aggregate FDA FAERS data with demographic breakdowns is needed rather than anecdotal or clinical trial information.
Side effects
- Drug name not found in FAERS — returns empty or no-match response if the name doesn't match any FDA records
- Ambiguous drug name matching multiple substances — may return data for the closest match or require disambiguation
- Network/payment failure — 402 payment required if USDC transaction not completed
- Rate limiting or upstream FDA API downtime causing delayed or failed responses
- Misspelled drug name yields no results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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