Homeopathy is based on the idea that you can treat sick people with diluted versions of substances that would cause the sick person’s symptoms in a healthy person. So, we guess it’s something like building up an immunity to iocane powder, except without any clinical evidence. In the US, homeopathy is a multibillion dollar industry and the FDA has taken notice. They’ve kind of let homeopathic solutions do their own thing for years now but homeopathic teething products, recently implicated in 400 adverse events, including the deaths of 10 children, have the FDA a bit more ready to take action. The agency is getting serious about getting the most dangerous homeopathic products off the market, which will hopefully help to avert these tragedies in the future.