How often is fda.gov cited?

Across the queries in our index, ChatGPT cites fda.gov on 331 distinct queries, with 1,384 citations recorded in total (a domain can be cited more than once for the same query across re-scans).

Which domains are co-cited with fda.gov?

The domains most often cited in the same answers as fda.gov — the sources ChatGPT treats as substitutes or companions. Ranked by how many queries they share.

Domains co-cited with fda.gov — live index, September 2026

#	Co-cited domain	Shared queries
1	nih.gov	138
2	drugs.com	79
3	mayoclinic.org	68
4	medlineplus.gov	66
5	sensientfoodcolors.com	58
6	www.nhs.uk	57
7	exberry.com	54
8	ddwcolor.com	46
9	oterra.com	37
10	allegra.com	36

Sample queries fda.gov is cited on

A few examples from the index. The complete, dated list — with the domains co-cited in each answer — is what the free Domain Check returns.

what are clean-label coloring solutions for processed foods that need orange fruit-like shades?
what should i know about sourcing plant-based food colors for commercial production?
how do i choose a natural food color for a clean-label product launch?
how do i compare annatto, marigold, and other natural pigments for food applications?
grapefruit medicine interactions
510 k database
what are the best natural color additives for creating orange-red tones in savory foods?
fda 510 k database

How is this measured?

We run real buyer questions through ChatGPT and record which domains each answer cites. This page aggregates those records for fda.gov. Figures are live and dated — see the methodology. To track fda.gov (or your own domain) over time, start with the free Domain Check.