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API guides

26 walkthroughs — one for each openFDA endpoint, written for humans

Illustration for Problem Reports openFDA guide Tobacco
Dec 10, 2025 · 5 min read

A quick guide to the Problem Reports API

If you have never hit tobacco/problem.json before, start here — we explain what comes back and how to write a basic search.

Tobacco openFDA guide ProblemReports
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Illustration for Prevention Ads Research openFDA guide Tobacco
Dec 8, 2025 · 5 min read

Prevention Ads Research: searching FDA tobacco data

The tobacco/researchpreventionads.json endpoint holds youth tobacco prevention ads copy testing research. We break down one working example and point out the parameters that matter.

Tobacco openFDA guide PreventionAdsResearch
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Illustration for Digital Ads Research openFDA guide Tobacco
Dec 6, 2025 · 5 min read

Digital Ads Research on openFDA — what the tobacco/researchdigitalads.json endpoint returns

A straight walkthrough of digital ads research records at tobacco/researchdigitalads.json, with a sample query you can paste into our Explorer.

Tobacco openFDA guide DigitalAdsResearch
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Illustration for Smokefree Research openFDA guide Tobacco
Dec 4, 2025 · 5 min read

Querying Smokefree Research (tobacco/researchsmokefree.json)

Real Cost campaign smokefree research data. This guide shows how to filter that dataset through openFDA.

Tobacco openFDA guide SmokefreeResearch
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Illustration for Historical Documents openFDA guide Other
Dec 2, 2025 · 5 min read

A quick guide to the Historical Documents API

If you have never hit other/historicaldocument.json before, start here — we explain what comes back and how to write a basic search.

Other openFDA guide HistoricalDocuments
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Illustration for NDC SPL Data Elements openFDA guide Other
Nov 30, 2025 · 5 min read

NDC SPL Data Elements: searching FDA other data

The other/nsde.json endpoint holds comprehensive ndc spl data elements file. We break down one working example and point out the parameters that matter.

Other openFDA guide NDCSPLDataElements
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Illustration for Substance Data openFDA guide Other
Nov 28, 2025 · 5 min read

Substance Data on openFDA — what the other/substance.json endpoint returns

A straight walkthrough of substance data records at other/substance.json, with a sample query you can paste into our Explorer.

Other openFDA guide SubstanceData
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Illustration for UNII List openFDA guide Other
Nov 26, 2025 · 5 min read

Querying UNII List (other/unii.json)

Unique Ingredient Identifier records. This guide shows how to filter that dataset through openFDA.

Other openFDA guide UNIIList
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