Track how AI engines describe your supplement brand.

ChatGPT, Perplexity, Claude, and Gemini are recommending — or skipping — your brand right now. EvidenceSignal measures every claim they make and checks it against every FDA Warning Letter, NAD ruling, and FTC consent order on file.

Scan my brand free → How it works
No account · Results in under a minute · Methodology open
The scanner

One URL. Four engines. Your AI-shelf scorecard in under a minute.

https://
No account required. Methodology open and footnoted. Compliance flags appear alongside ranking.
4
Engines
80
Prompts
52s
Median runtime
9,190
Letters cross-checked
How it works

Three steps from URL to weekly compliance signal.

01 · Scan

We ask the engines about you

Eighty supplement-shopper prompts go to ChatGPT, Perplexity, Claude, and Gemini. We capture every brand recommendation, every product claim, every citation each engine made about your category in real time.

02 · Score

Every claim, checked against precedent

Each AI-surfaced claim is classified against the largest regulatory corpus in supplements — 6,717 FDA Warning Letters, 2,200 NAD rulings, 271 FTC actions. Disease claims are flagged; structure/function language is graded; plaintiff-bar exposure is scored.

03 · Monitor

We watch the shelf, weekly

Paid tiers turn the one-shot scan into a continuous monitor. You receive a Decision Loss Ledger every Friday and a Slack alert the moment regulators publish a ruling on language that overlaps your AI surface.

Industry Watch · Free

The Supplement AI Shelf Index, updated daily.

Citation share across ChatGPT, Perplexity, Claude, and Gemini for the two hundred most-prompted supplement queries. The data our scanner is built on, published openly.
As of close, May 23
124.7
+ 2.31% week over week
The Index has risen for nine consecutive sessions — the longest run since launch — drawn upward by a NAD ruling on liposomal claims and a ChatGPT model update late last month.

Risers — week over week

Iron Rock NAD++18.2%
Thorne+9.7%
Ritual+6.1%
AG1+4.3%
Cymbiotika+3.0%

Fell hardest — week over week

Pharmavite−8.5%
Nature Made−6.2%
Garden of Life−5.0%
Olly−3.4%
Mary Ruth's−2.1%
Live data

Every prompt the engines answer about your category, as it happens.

A two-minute sample of the public feed — roughly two hundred prompts per minute across the four engines.
41,872
Prompts today
312
Brands cited
18.4%
Leader · AG1
27
Flags today
Research

What our analysts published this week.

Letters, brand spotlights, and Index commentary — open and footnoted.
See all research →
The data we built

The largest indexed regulatory corpus in the supplement category.

Every Warning Letter, NAD ruling, and FTC consent order — parsed, classified, embedded, cross-referenced. It's why the scanner can cite precedent in 60 seconds.
6,717
FDA Warning Letters
2,202
NAD rulings
271
FTC actions
4,060
Cited claims classified
Pricing

Pick a tier that fits.

Free scanner

$0 · Public

A single-brand scan against all four engines. Citation share, position, and three sample compliance flags. No account.

  • One single-brand scan
  • 80 prompts across 4 engines
  • Citation share + position
  • Three sample compliance flags
Scan my brand

Design partner

$1,000 – $5,000 · monthly

Continuous monitoring, weekly Decision Loss Ledger, real-time alerts. First six design partners.

  • Weekly Decision Loss Ledger
  • Continuous 4-engine monitoring
  • Real-time regulator-overlap alerts
  • Direct founder access
Request a pilot

Enterprise

$10,000 – $50,000 · annual

Multi-brand monitoring, pre-publish compliance gate, custom query slates, dedicated success lead.

  • Up to 50 brands in a portfolio
  • Pre-publish compliance gate (CLEC)
  • Custom query slates per brand
  • Dedicated success lead
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