Drugs that selectively bind to but do not activate HISTAMINE H3 RECEPTORS. They have been used to correct SLEEP WAKE DISORDERS and MEMORY DISORDERS.

Synonyms: 0, H3 Antihistaminics, Histamine H3 Blockers, H3 Antagonists, Histamine, H3 Blockers, Histamine, Antagonists, Histamine H3, Antihistaminics, H3, Histamine H3 Antagonists, Blockers, Histamine H3, Histamine H3 Receptor Antagonists