I recently finished an audiobook that describes the history of cocaine and opiate use in that era. The drugs were unregulated until addiction became an issue. I'm interested in how drugs shape our society so I appreciate books like this that fill in the missing history.
David Farber - Crack: Rock Cocaine, Street Capitalism, and the Decade of Greed [Audiobook]
It was extremely widespread in Russian Empire too. To the extent that not only poets and artists used morphine and cocaine, but also some high ranking officials. One of the police chiefs, for example, was both morphinist and alcoholic.