On the news at the moment they are discussing proposals to license and regulate herbal products (I refuse to use the word "medicines") but only in a rather limited sense. They are talking about labelling them with something that, in essence, says it is safe to take and won't do you any harm.
There is an argument against it from the pharmacists who are suggesting that such a label might give people the impression that the products have some clinical value. This may be true for some and not for others and the anti-argument is that the existence of the label will give people the impression that the products are of proven medical effect.
The solution seems perfectly simple to me. License them as safe and make the label something like.
This product is safe to consume.
It will do you no harm.
This is because it does nothing.
It has no proven medical effect.
They can put it on all the homoeopathic remedies too, but replacing the last line with
It is proven to have
NO medical effect whatsoever.