The BBC did a short series called "Victorian Pharmacy" where they attempted to use Victorian-era cures on modern people. Except they couldn't even try most of them because they were too dangerous - opium, arsenic, mercury, cocaine, etc. And the things they could try (excepting Lea & Perrins sauce) were basically torture devices like the Malvern Water Cure[2].
[1]https://www.youtube.com/watch?v=jXnVTMzSy3s
[2]https://en.wikipedia.org/wiki/Malvern_water