Aspirin is capitalized in Mexico, Canada, Germany and a lot of other places because it is a protected trademark of Bayer AG. Aspirin is lower case in the USA because it is sold generically here as the German pharmaceutical giant lost its trademark here in 1921.
Aspirin is capitalized William Lawrence Sr Omnibit 01-01-20

Well, in German, it would be capitalized anyway, regardless of trademarks, because nouns are capitalized in German, with only a very few exceptions.
Though, a German would more likely say, “Ich habe eine Tablette genommen”, than, “Ich habe eine Aspirin genommen.”
Never knew that. Love your additions, Brad.
Mom always said that I should have gone on “Jeopardy!”