UNSPSC 51313900: Antihistamine or H1 blocker tetrazoles

Antihistamine or H1 blocker drugs made from a 5-member ring of four nitrogen atom and one carbon atom, based on CN4H2.

UNSPSC 51313900 Antihistamine or H1 blocker tetrazoles is a Class code that in recent state and local procurement activity covers emergency pharmaceutical supplies, particularly naloxone and drug-deactivation systems procured by county health and public-safety agencies. The scope diverges from the abstract code name — recent solicitations target life-safety pharmaceuticals and harm-reduction equipment rather than a specific antihistamine drug class. County governments and special-purpose health authorities represent the primary issuing bodies under this code, sourcing products to support community health initiatives and emergency response programs.

Seminole County, Florida posted an IFB (Invitation for Bid) in June 2026 seeking 1,900 units of naloxone and 800 safe drug-deactivation systems annually through competitive bidding, with quarterly deliveries to the county community health building and a response deadline of July 26, 2023. The contract structure includes a two-year initial term with a one-year renewal option, fixed-fee pricing, and standard compliance requirements (drug-free workplace certification, E-Verify, workers' compensation and professional liability insurance). FEMA potential funding introduces federal compliance layers including Clean Air Act and Federal Water Pollution Control Act adherence. The procurement shows limited recent activity under this code within the source dataset, and the single opportunity identified reflects a niche market in county-level emergency pharmaceutical procurement rather than broad health-system procurement patterns.