Health fraud

 Quackery is the promotion
The word "quack" derives from the archaic word "quack salver", of Dutch origin, literally meaning "hawker of salve". In the Middle Ages the word quack meant "shouting". The quack salvers sold their wares on the market shouting in a loud voice.
"Health fraud" is often used as a synonym for quackery, but quackery's salient characteristic is aggressive promotion  rather than fraud, greed or misinformation. A similar process occurred in other countries of Europe around the same time, for example with the marketing of Eau de Cologne as a cure-all medicine by Johann Maria Farina and his imitators. Patent medicines often contained alcohol or opium.
The number of internationally marketed quack medicines increased in the later 18th century; the majority of them originated in Britain and were exported throughout the British Empire.