Aspartame... ant killer
How do you kill ants with aspartame? I was unable to persuade them to eat it.
Thalidomide... give the go ahead to reintroduce it...
IIRC only one isomer of thalidomide does bad things.
The resurgence of poliomyelitis... Lou Gehrig's Disease, ALS, Motor Neurone Disease, Post Polio Residual Paralysis... actually caused by the live polio vaccine
Well, everyone with those very rare diseases certainly had the vaccine. But so did everyone without those diseases, except the ones with polio.