According to my hubby, he has some nerve problems, he feels quite good after taken it. my hubby also studied a lot of information before choosing it. Frankly, you can simply treat it as supplement like others. If one has no significant daily problem, one may not able to tell. But for my hubby, the said supplement let him really feel better.
To declare, we have no share or no friend with Mr. Li.
Actually, I tends to use daily things of natural material. I am using essential oil too. I tried to avoid chemical as far as possible. However, I believe, even natural stuff could be toxic too. I think just strike a balance will do.
As said before, if one has no major problem, one may not aware the difference. I will try the supplement too as my hubby said it helps the body in general.