>selling tubes of plain water with a label of "may help the common cold", I wouldn't really have a problem with it.

AFAIK they would also need the standard FDA disclaimer of

>This/these statement(s) have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

edit: apparently there's an exemption for homeopathic medicine, so they don't need it. That's a shame. https://rationalwiki.org/wiki/Quack_Miranda_Warning#Homeopat...