There are far more worse risk in real life than
being posioned by a few traditional Chinese medicine.
So only sicetific people care a little bit.

Even a person does not believe health benefits
in dietary supplements, he may not mind either
buiysing some for his parents as new year gifts
etc.

OK. Vitamin E raise death risk by 16%. But the base
is very low anyway. Who cares about reducing
or increasing risk of being hit by a shooting start anyway?