I love looking at pharmaceutical advertising in this way - what they do say is the absolute legally maximum they could say about the product. If there were stronger claims, they could make them.
Therefore, if they say "may help against X", then it doesn't really, because if they had substantial evidence of that, they would state that.
Therefore, if they say "may help against X", then it doesn't really, because if they had substantial evidence of that, they would state that.