chemical cosh
n.— «These drugs can make people more manageable and less demanding. They have been implicated in the torture of prisoners in Soviet psychiatric prisons. Allegations concerning their use as the “chemical cosh” continues to emerge from British prisons. Most worrying of all, perhaps, is their routine use for the management and control of people with mental handicaps.» —“Society Tomorrow: When short term tranquility turns to lasting tyranny” by Ron Lacey Guardian (United Kingdom) Mar. 20, 1985. (source: Double-Tongued Dictionary)