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FDA Drug Label Lookup
x402
FDA Drug Label Lookup is a paid API for AI agents from agent402.tools, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-17).
Retrieves official FDA drug labeling information (SPL) by brand name, generic name, or NDC, including boxed warnings, indications, dosage, contraindications, and warnings.
Price / call$0.004
Success—
StatusUnknown
How this service works
FDA drug labeling (openFDA SPL) by brand or generic name, or by NDC: boxed warning, indications and usage, dosage and administration, contraindications, and warnings and precautions, with manufacturer, routes, application number, NDCs and the label's effective date. Each section reports its full length and whether it was cut. Newest label first; the answer says how many labels matched. Live FDA data, no key.
Output
Returns structured FDA drug label data including boxed warning, indications and usage, dosage and administration, contraindications, warnings and precautions, manufacturer name, routes of administration, application number, NDC list, and label effective date. Each text section includes its full character length and a flag indicating if it was truncated. Response also reports how many total labels matched the query, with newest label returned first.
Example use cases
Checking boxed warnings before prescribing
“What does the FDA's official label say about boxed warnings and contraindications for warfarin? Show me the full prescribing information.”
Verifying NDC label for a specific product
“I have NDC 58151-155-77 — can you pull the FDA drug label for that product and show me the indications, dosage instructions, and the label's effective date?”
Researching generic drug safety for a patient
“Look up the FDA label for metformin, specifically the warnings and precautions and any contraindications — I want to see who shouldn't take it.”
Technical details
Endpoint
GEThttps://agent402.tools/api/drug-label?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need official, authoritative FDA drug label content (SPL data) including safety-critical sections like boxed warnings, contraindications, and dosage instructions. It is ideal for agents building healthcare tools, medication safety checkers, or clinical decision support. Prefer this over generic drug databases when you need the actual regulatory label text, manufacturer details, and NDC associations directly from FDA, without requiring an API key.
Side effects
- Drug name not found in FDA database — returns zero matches
- Ambiguous name matches multiple products — returns only up to the requested limit
- NDC format incorrect (missing hyphens) — may return no results
- Section content truncated if maxChars limit is too low for complete text
- Rate limit or payment failure for x402 micropayment — request rejected
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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