Here are a few that I curated for a talk on psychopharmacology. Some were relatively recent, i.e within the last 50 years.
Interesting that heroin was marketed two years before aspirin, and cocaine was freely available in lozenges, drops, tonic wines, injectable forms, and of course the oiginal Cocacola.
Before early 1930s, no prescriptions were required, internationally. They were initially introduced by the US, in response to growing cocaine addiction. Ironic that the current narcotic addiction epidemic has been prescription-driven.
Brian, you would have been able to swallow drinkable radium (and presumably have your own toxic dump?).
Strychinine was used in this part of the world until recently, by sheep farmers against jackals (coyote-like predators). At the time it was sold as a tonic, the by-line was "Put a spring in your step with strychnine!"
Harry, your image of the baby and DDT brings to mind that it has made a come-back in the developing world. It was commonly used during my childhood. After Rachel Carson prodded our consciences with "The Silent Spring" it was banned world-wide, but we have had to re-introduce it in controlled fashion in order to combat malaria mosquitoes (500,000 malaria deaths per year globally).
The advert for dehydrated water reminds me of pop-top cans of fresh mountain air that were on sale for a while.