Well this actually wasn't the answer I was looking for, as I believed they only applied the arsenic topically... However further research has revealed that you are correct.
The answer I was looking for was that Mountain-climbers in late-19th-Century Austria regularly consumed arsenic to, “…obtain healthy and sturdy looks…to appear strong and robust…”, and to “…facilitate breathing while climbing…” (Baron Ernst von Bibra.)
You still get the point.
1. Sepher - 8 points
2. atm23 - 3 points
2. skillet - 3 points
3. PJKT2501 - 2 points
4. JAY.DEE - 1 point
4. SerotonergicHaze - 1 point
4. Vader - 1 point
I think some of you guys need to play catch up.
Question:
Apart from alcohol which comes in at number 1, which drug/family of drugs has been in use on all continents for thousands of years - longer and more widespread than any other substances.