---
name: fda-database
description: Query the openFDA API to retrieve FDA regulatory datasets (drugs, devices, adverse events, recalls, submissions, UNII) when you need programmatic safety/regulatory evidence for analysis or research.
license: MIT
author: AIPOCH
---
> **Source**: [https://github.com/aipoch/medical-research-skills](https://github.com/aipoch/medical-research-skills)

## When to Use

1. **Pharmacovigilance / safety signal screening** when you need adverse event counts, common reactions, or serious-event rates for a drug.
2. **Medical device regulatory research** when you need 510(k)/PMA context, device classification, UDI lookups, or device adverse events/recalls.
3. **Recall and enforcement monitoring** when you need to track Class I/II/III recalls across drugs, devices, or foods.
4. **Substance identity resolution** when you need UNII/CAS/name-based lookups and basic substance relationship/structure retrieval.
5. **Veterinary safety analysis** when you need animal adverse events filtered by species/breed and product.

## Key Features

- Unified Python interface (`FDAQuery`) for multiple openFDA domains (drug, device, food, animalandveterinary, other).
- Convenience helpers for common tasks:
  - Drug events, labels, recalls, shortages
  - Device events, classification, 510(k), PMA, UDI
  - Food events and recalls
  - Animal/veterinary adverse events
  - Substance (UNII/name) lookups
- Supports openFDA query patterns:
  - Fielded search strings, date ranges, wildcards
  - Aggregations via `count_by_field(...)` (with `.exact` support)
  - Pagination via `skip/limit` and bulk retrieval via `query_all(...)`
- Operational safeguards:
  - Optional API key support for higher daily limits
  - Built-in caching (TTL) and rate limiting (as implemented in `scripts/fda_query.py`)
  - Basic error handling patterns

> Additional endpoint notes and query syntax are typically documented in:
> `references/api_basics.md`, `references/drugs.md`, `references/devices.md`, `references/foods.md`, `references/animal_veterinary.md`, `references/other.md`.

## Dependencies

- Python **3.9+**
- openFDA API access (public)
- Optional: openFDA API key (recommended for higher daily quota)

> Package-level dependencies (e.g., `requests`) are defined by the repository implementation in `scripts/fda_query.py`. If you maintain this skill, pin them in `requirements.txt` (for example, `requests==2.31.0`) to ensure reproducibility.

## Example Usage

The following example is designed to be runnable in a repository that contains `scripts/fda_query.py` and the `FDAQuery` class.

### 1) Set an API key (optional, recommended)

```bash
export FDA_API_KEY="your_key_here"
```

### 2) Run a complete script

```python
import os
from datetime import datetime, timedelta

from scripts.fda_query import FDAQuery


def drug_safety_profile(fda: FDAQuery, drug_name: str):
    # Total adverse events (meta.total)
    events = fda.query_drug_events(drug_name, limit=1)
    total = events.get("meta", {}).get("results", {}).get("total", 0)

    # Top reactions (aggregation)
    reactions = fda.count_by_field(
        "drug",
        "event",
        search=f"patient.drug.medicinalproduct:*{drug_name}*",
        field="patient.reaction.reactionmeddrapt",
        exact=True,
    )
    top_reactions = reactions.get("results", [])[:10]

    # Serious events
    serious = fda.query(
        "drug",
        "event",
        search=f"patient.drug.medicinalproduct:*{drug_name}*+AND+serious:1",
        limit=1,
    )
    serious_total = serious.get("meta", {}).get("results", {}).get("total", 0)

    # Recent recalls
    recalls = fda.query_drug_recalls(drug_name=drug_name)
    recall_results = recalls.get("results", [])

    return {
        "drug": drug_name,
        "total_events": total,
        "serious_events": serious_total,
        "serious_rate_pct": (serious_total / total * 100.0) if total else 0.0,
        "top_reactions": top_reactions,
        "recalls_sample": recall_results[:5],
    }


def monthly_event_trend(fda: FDAQuery, drug_name: str, months: int = 6):
    trends = []
    for i in range(months):
        end = datetime.now() - timedelta(days=30 * i)
        start = end - timedelta(days=30)
        date_range = f"[{start.strftime('%Y%m%d')}+TO+{end.strftime('%Y%m%d')}]"

        search = (
            f"patient.drug.medicinalproduct:*{drug_name}*"
            f"+AND+receivedate:{date_range}"
        )
        result = fda.query("drug", "event", search=search, limit=1)
        count = result.get("meta", {}).get("results", {}).get("total", 0)

        trends.append({"month": start.strftime("%Y-%m"), "events": count})

    return list(reversed(trends))


def main():
    fda = FDAQuery(api_key=os.getenv("FDA_API_KEY"))

    # Drug: safety profile + trend
    profile = drug_safety_profile(fda, "aspirin")
    trend = monthly_event_trend(fda, "aspirin", months=6)

    # Device: quick cross-database lookup
    device_lookup = {
        "adverse_events": fda.query_device_events("pacemaker", limit=10),
        "classification": fda.query_device_classification("DQY"),
        "510k": fda.query_device_510k(applicant="Medtronic"),
        "udi": fda.query("device", "udi", search="brand_name:*pacemaker*", limit=5),
    }

    # Food: recall monitoring
    food_recalls = fda.query_food_recalls(reason="undeclared peanut", limit=10)

    # Substance: UNII lookup
    substance = fda.query_substance_by_unii("R16CO5Y76E")

    print({"drug_profile": profile, "drug_trend": trend})
    print({"device_lookup_keys": list(device_lookup.keys())})
    print({"food_recalls_count": len(food_recalls.get("results", []))})
    print({"substance_keys": list(substance.keys())})


if __name__ == "__main__":
    main()
```

### 3) Run the repository examples (if provided)

```bash
python scripts/fda_examples.py
```

## Implementation Details

### API domains and endpoints

This skill is a thin client over openFDA endpoints, typically accessed as:

- **Drugs**: `drug/event`, `drug/label`, `drug/ndc`, `drug/enforcement`, `drug/drugsfda`, `drug/drugshortages`
- **Devices**: `device/event`, `device/510k`, `device/classification`, `device/enforcement`, `device/recall`, `device/pma`, `device/registrationlisting`, `device/udi`, `device/covid19serology`
- **Foods**: `food/event`, `food/enforcement`
- **Animal/Veterinary**: `animalandveterinary/event`
- **Other/Substances**: `other/substance`, `other/nsde`

Exact helper method names (e.g., `query_drug_events`, `query_device_510k`) are implemented in `scripts/fda_query.py`.

### Query construction

- Searches are passed as openFDA query strings (Lucene-like), e.g.:
  - Field match: `patient.drug.medicinalproduct:aspirin`
  - Wildcards: `*aspirin*` (use sparingly)
  - Boolean: `A+AND+B`
  - Date range: `receivedate:[20240101+TO+20241231]`
- Pagination uses:
  - `limit` (page size)
  - `skip` (offset)
- Aggregations use `count_by_field(domain, endpoint, search, field, exact=True)`:
  - When `exact=True`, the implementation typically appends `.exact` to the aggregation field to avoid tokenization issues.

### Rate limits and authentication

- openFDA supports unauthenticated access with lower daily quotas; an API key increases the daily request limit.
- The client is expected to:
  - Attach the API key when provided
  - Apply rate limiting and retries (per `FDAQuery` implementation)

### Result handling and robustness

- Responses generally follow:

```json
{
  "meta": { "results": { "skip": 0, "limit": 100, "total": 12345 } },
  "results": []
}
```

- Always guard for:
  - Missing `results`
  - Empty result sets
  - `error` objects returned by the API

### Caching

- If enabled in `FDAQuery`, caching reduces repeated calls for identical queries.
- Typical parameters (implementation-dependent):
  - `use_cache=True`
  - `cache_ttl=<seconds>`

---
Source attribution: aipoch
Original project: https://github.com/aipoch/medical-research-skills/blob/686e09dfdb45d9fa1a08664f06bb93769b3c9d91/scientific-skills/Evidence%20Insight/fda-database/SKILL.md
License: MIT
License information: https://opensource.org/license/mit
Original upstream instructions; downloaded from Dave AI.

## Upstream license notice

MIT License

Copyright (c) 2026 AIpoch

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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SOFTWARE.



# Dave AI resource metadata

Creator / publisher: aipoch
Original project: https://github.com/aipoch/medical-research-skills/blob/686e09dfdb45d9fa1a08664f06bb93769b3c9d91/scientific-skills/Evidence%20Insight/fda-database/SKILL.md
Attribution basis: Source repository record

Fields of work: Healthcare & Life Sciences
Roles: Clinical Research, Health Informatics, Medical Writer, Pharmacy / Drug Info
Specialties: API
Tools: Openfda
Country applicability: Country not specified
Classification basis: Source catalog labels
Instruction SHA-256: d23863201bfe2c2dc337bc8fbd46f87a16d2fce9baa1136d124a484233365171
