Nih Supplements MCP server

@pipeworx/nih-supplements

NIH fact sheets for vitamins, minerals and a few botanicals — uses, safety, interactions with medications, references — plus real supplement product labels from NIH's Dietary Supplement Label Database, and NCCIH's herb safety/science summaries for the many popular herbs ODS itself doesn't cover.

Part of Pipeworx — an MCP gateway connecting AI agents to 1576+ live data sources.

Tools

does, whether it works, safety, and interactions with medications. level is consumer (short, default) or professional (long, clinical, with a references list).

• supplement_factsheet(name, level?) — a topic's ODS fact sheet: what it

publishes a fact sheet for, and which reading levels each has.

• supplement_factsheets(query?) — the bundled list of ~45 topics ODS

ingredients, amounts, claims) from the Dietary Supplement Label Database (DSLD) by product, brand, or ingredient.

• supplement_labels(query, limit?) — search real product labels (brand,

amounts, other ingredients, manufacturer contact, precaution statements.

• supplement_label(id) — one product's full label detail: ingredient

summary for ~56 popular herbs (turmeric, ginkgo, echinacea, garlic, ginseng, milk thistle, St. John's Wort, and more) that ODS does not have its own fact sheet for.

• herbata_glance(herb) — NCCIH's "Herbs at a Glance" science-and-safety

entered on or after a date, newest first, deterministic on replay. DSLD is the only NIH supplement upstream with a queryable change signal; the response states plainly that withdrawals (offMarket transitions) and ODS/NCCIH content updates are NOT diffable upstream rather than pretending to cover them.

• supplementrecentchanges(since, limit?) — new DSLD product labels

Change tracking & enumeration (for periodic refreshers)

(sortby=entryDate&sortorder=desc) to the cutoff — deterministic, so replays are idempotent until NIH enters new labels.

• New labels: supplementrecentchanges(since) pages DSLD newest-first

list endpoint, no sitemap lastmod (checked 2026-09-08; NCCIH's sitemap exists but carries no dates, and HHS's syndication API is bot-walled). Each supplement_factsheet response carries its own reviewed date.

• Fact-sheet / herb-page content changes: not diffable upstream — no

supplementfactsheets() lists all ~45 ODS topics; the ~56 NCCIH herbs are in NCCIHHERBS in src/index.ts (and any name from either list can be fetched in full). DSLD's full corpus (~215k labels) is enumerable via the same sorted paging (size/from), and NIH also publishes full DSLD dataset downloads at for bulk use. There is no versioned bulk file for the fact sheets — enumeration over the bundled inventory IS the snapshot path for them.

• Full enumeration: both content corpora are bundled and small —

Auth

Keyless. All three upstreams (ODS fact sheets, DSLD, NCCIH) are open NIH sites with no API key.

Data sources

Shortened. The full README is on GitHub.