Maybe mid or late 1960s. To come to think of it.
Good correction.
Of course a new product called “Ben Gay” couldn’t be brought to market today. Do you remember the slimming product Ayds? (I loved those chewy, chocolatey little cubes! I could eat half a box at one sitting, easy.) When Aids became all the rage, the company was flummoxed. “It was our name first! Let them change the name of the disease!”) Of course it didn’t help that Aids was much more slimming than Ayds. The company was sold and the product was eventually pulled from the market.
See my post #62. That's the mid to late 1930's at least.