FDA Unique Ingredient Identifiers (UNIIs)

Description

FDA’s Global Substance Registration System enables efficient and accurate exchange of information on substances through their Unique Ingredient Identifiers (UNIIs) which can be generated at any time in the regulatory life cycle.

Note

UNIIs are generated based on scientific identity characteristics using ISO 11238 data elements. UNII availability does not imply any regulatory review or approval. Synonyms and mappings are based on the best public information available at the time of publication. Please report any problems/errors associated with this data to FDA-SRS@fda.hhs.gov.

✋ Request this data source

Source links

Download

UNII - Archive

Substance Registration System

precision.fda.gov

API

Licensing

Update frequency

Monthly-ish - kind of every 2-3 months sometimes

Table info

On this page

• FDA Unique Ingredient Identifiers (UNIIs)
• Description
• Source links
• Download
• API
• Licensing
• Update frequency
• Table info