SDCL § 34-20B-20.1: Gamma hydroxyl butyrate defined.

For the purposes of § 34-20B-20, the term, gamma hydroxyl butyrate, includes gamma-butyrolactone, 1,4-butanediol or any other substances which convert to gamma hydroxyl butyrate upon ingestion. However, the term does not include any product which is lawfully used for mechanical, industrial, manufacturing, or scientific purposes.