CrimsonKidCK:
Yes, laudanum was pretty much an opium distillate mixed with a liquid (which could include alcohol)--of course, there were no health standards and no labeling requirements for 'medicine,' at least until the Pure Food and Drug Act (1906).
In "Tombstone," Wyatt Earp's wife (Maddie) is shown as a laudanum addict--which is employed to partially justify him having an affair with an actress (Josephine Marcus), after sending her (Maddie) by train to California... --C.K.
CrimsonKidCKIn the movie "Bite The Bullet" (about a cross-country endurance race on horseback) one of the racers, a Mexican with a bad toothache, is seen buying a small tin of "heroin" tablets ("heroin" was originally a trademarked name) and gobbling them to ease his pain while riding. He finally went too far and overdosed on them (I don't think he died) but all that was legal (marijuana, cocaine, heroin, opium, codeine "cough syrup" and plenty of other stuff) until around 1934 (right after Prohibition was repealed, ironically) and the government started really cracking down on the competition to alcohol.
Both "The Shootist" and "Bite The Bullet" were set in the early 1900's. I think "Wyatt Earp" was somewhat earlier but that stuff and all manner of "patent medicines" with dubious ingredients were popular for years and a lot of legitimate doctors sold these products to supplement their incomes.
Back to the original subject, I'm quite sure spankings for children (and ever harsher physical punishments, even for younsters) were much more popular then. Whether they were "the good, old days" is subject to discussion, but as for me, I say "no". Don't forget at the time the average life span was less than fifty (for an adult white male). It was still less than 62 when Social Security was enacted in 1935...