Substance Registration System-Unique Ingredient Identifier

**Semantic type:** Intellectual Product

**Definition:** A standard terminology developed and maintained by the Department of Veterans Affairs/Veterans Health Administration designated federal collaborative Structured Product Labeling Interagency Expert Panel (SPLIEP). It contains terminology to support the mechanism of action, physiologic effect, and asserted pharmacologic classification relationships of drug ingredients and food allergens.

**Synonyms:** - SRS-UNII - UNII - VA/VHA SRS-UNII