Bayer’s Heroin, initially thought to be free of the common side effects of morphine like nausea and constipation and therefore assumed also to be free of addiction, was marketed as a cough suppressant and a remedy for headaches, asthma, emphysema, and even tuberculosis. But as the side effects of their “super aspirin” became obvious, Bayer and Company quietly stopped advertising it. When the original patents for acetyl salicylic acid expired in 1917 and other companies began producing aspirin, Bayer sued for breach of copyright over the name. Not surprisingly, Bayer has never sued for copyright violation of the Heroin trade name for diacetylmorphine.
Oh, but I bet they have had a meeting to discuss whether they should.