The Public Advertiser, London, May 20, 1758

The True Delescot’s Original Opiate, so famous for the Teeth, Gums, and Breath (with the Tincture for immediate curing the Tooth ache) which was prepared for upwards of 60 Years at the Royal Bagnio in St. Jame’s-street, is now faithfully prepared, and sold in any Quantities, with directions, at Eaton’s Glass and China Shop in Little Rider-street, near the Bagnio, and at the Civet Cat, a Perfume and Snuff-shop, near the Admiralty, just below Charing-cross; likewise (as usual) at the most eminent Coffee-houses, Toyshops, Perfume-shops, &c. in London and Westminster.

Each Pot and Bottle that is genuine has these Words on the Seal, by LEGGE and Comp.

Buy your opiates at the toy shop! 

If anyone’s wondering, a bagnio was a bathhouse, known as a place to do your “sweating, bathing, shaving and cupping” and sometimes drink some Turkish coffee after your Turkish bath. Less legitimate ones were basically just brothels or no-questions-asked boarding houses.