Re: Medicines of the 1860s to 1920s.
Many medicines of this era ended up what are now known as "Baby Killers," as they did not know that certain substances, or certain combinations were toxic to children. Mercury, a substance used to extract gold ore, killed blinded, or drove many insane in my state.
Opium's, cocaines, etc., were sold under such names as Coca-Cola. Speaking of constipation, we have the one and only Dr Pepper, (older than Coca-cola.)
back as far as the Civil War, when drinking liquor was a real no-no, it was bottled and sold as Bitters. Unsuspecting, but caring wives would send these to their men in the field to help thwart off, or cure everything from stomach, liver, and kidney ailments, to mange, jaundice, disease, and if all else failed, to promote general healthfulness aka blood purifier. I am told that the alcoholic content was that of whiskey.
Women could be lead to believe that certain bitters could cure their problems, from hair growth and weight problems, to babies.
I have a few reproduction advertisement signs from the 1900's with quotes such as "pure and wholesome," "health preserving" and "a medical breakthrough." Since I am quickly learning that the Victorian/Edwardian era was all about cleanliness and health, these peddlers, and magazine advertisers could easily make a good living from marketing items that appeal to the masses.... much like today!