FDA issues warnings to four hand sanitizer manufacturers after they make unsupported claims about E.coli and MRSA
This is good to see. Advertisements are often misleading enough when they are legal, but these clearly violate the already lax law.
The loophole most of the unproven claims slip through is that a manufacturer can claim that any product supports any bodily function.
Whenever you hear an advertiser claim that their product supports your body's ability to do this, or fight that, you should translate that to "there is no evidence that this product can do that". If there was actual evidence, they would state the claim directly instead of using weasel words which are applicable to absolutely anything and mean nothing.