Well, you SHOULD be concerned.  I've been preaching the message about "placebos" for 25 years already, but few people actually understand the simplicity of what I'm saying, which is: a placebo can also be dangerous - - just as dangerous as a medical drug.  Most if not all medical drugs are, or have the potential to be, dangerous.

https://articles.mercola.com/sites/articles/archive/2020/03/03/placebos-may-contain-harmful-ingredients.aspx