# Vextorium US Drug Facts Lookup

> Vextorium US Drug Facts Lookup is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-16).

Returns US drug label information from openFDA for a given drug name, including brands, active ingredients, uses, dosage, warnings, contraindications, interactions, pregnancy info, and manufacturer.

## Facts

- Endpoint: POST https://api.vextorium.com/medicamento-info-pago?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vextorium-us-drug-facts-lookup-70f18d38
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_wDmiHMUKLJYp6aQEe7UQT

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability vextorium-us-drug-facts-lookup-70f18d38 -d '<json body>'
```

Example prompt: What does the US drug label say about ibuprofen — give me the active ingredients, warnings, contraindications, and drug interactions, up to 2 results.

## When to prefer this

Choose this endpoint when you need structured US drug label data (FDA-sourced) for a named drug, especially when you need multiple fields at once (brands, warnings, interactions, pregnancy info, dosage) in a single call. Prefer it over generic web search when you need authoritative, structured FDA label content rather than informal drug information sites.

## Known failure modes

- Drug name not found in openFDA — empty results array returned
- Misspelled or ambiguous drug name yields no matches
- Rate limiting or payment failure for the x402 micropayment
- openFDA upstream service unavailable causing API timeout
- Limit parameter out of range (must be 1–5) causing validation error

## How this service works

US drug facts from the official label (openFDA): brands, active ingredient, uses, dosage, warnings, contraindications, interactions, pregnancy and manufacturer. Information, not medical advice.

## Output

Returns an array of drug label entries from openFDA, each containing brand names, active ingredient(s), indicated uses, dosage instructions, warnings, contraindications, drug interactions, pregnancy/lactation guidance, manufacturer name, and label version. Also includes the search term used and a disclaimer that results are informational, not medical advice.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "limite": {
   "type": "integer",
   "description": "1-5"
  },
  "nombre": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vextorium-us-drug-facts-lookup-70f18d38/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.vextorium.com](https://www.zero.xyz/host/api.vextorium.com/llms.txt)