GET /drug/event.json

fda.gov:fda-open-api

Summary: Drug Adverse Event Reports
Operation ID: getDrugEvents
Auth: api_key
Description

Returns adverse event reports for drugs from the FDA Adverse Event Reporting System (FAERS). Data follows the ICH E2b/M2 version 2.1 standard.

Parameters (6)

api_key (string, query, optional)

Optional API key for higher rate limits (120,000/day vs 1,000/day without key). Request at https://open.fda.gov/apis/authentication/

count (string, query, optional)

Field to count unique values for (returns aggregation instead of individual records). Use with .exact suffix for exact matches.

limit (integer, query, optional, default: 1)

Maximum number of results to return (1-1000)

Constraints: {'minimum': 1, 'maximum': 1000}

search (string, query, optional)

Elasticsearch query string. Use field:value format with +AND+, +OR+ for boolean logic. Replace spaces with +.

skip (integer, query, optional, default: 0)

Number of results to skip for pagination

Constraints: {'minimum': 0}

sort (string, query, optional)

Field to sort results by. Use :desc or :asc suffix.

Examples (5)

TitleTypeURLAction
Search drug adverse events openapi-spec https://api.fda.gov/drug/event.json?search=patient.drug.medicinalproduct:aspirin
FDA adverse events by drug name (aspirin) doc_extracted https://api.fda.gov/drug/event.json?search=patient.drug.medicinalproduct:aspirin
FDA adverse events search by drug name (MedxR SDK) doc_extracted https://api.fda.gov/drug/event.json?search=aspirin
Get drug adverse events probe-gate https://api.fda.gov/drug/event.json?limit=1&skip=0
Drug Adverse Event Reports probe-gate https://api.fda.gov/drug/event.json

Probe History

Latency

Status Codes

TimeStatusLatencySize
2026-03-23 10:22:47.879669 200 2401ms
2026-03-23 10:11:53.233551 200 1148ms
2026-03-23 10:09:36.893862 200 1308ms
2026-03-23 09:48:18.186136 200 2398ms
2026-03-23 09:41:09.358117 200 1092ms
2026-03-21T23:23:47.008289 200 2755ms

Response Changes

WhenOldNew
2026-03-23 09:41:09.358117 26c2cc3c4c1e 0b70bd47eef6
2026-03-23 09:48:18.186136 0b70bd47eef6 26c2cc3c4c1e
2026-03-23 10:09:36.893862 26c2cc3c4c1e 8d2867dcec33
2026-03-23 10:11:53.233551 8d2867dcec33 0b70bd47eef6
2026-03-23 10:22:47.879669 0b70bd47eef6 26c2cc3c4c1e