Marketing in the field of "health", its features and problems, free and involuntary sales agents
Question one: standard
Basically this GMP (Good Manufacturing Practice) is applicable for everything, including medicines and food.
This standard should ensure a high level of product quality and ensure that the formula of the product manufactured is as declared, the product does not contain impurities, there is an appropriate labeling, the product is suitably packaged, it will not lose its properties over its expiration date.
That is, you are not poisoned by salts of heavy metals, phenols and other organics, but there is nothing about the USE. But this is not a POISON.
Each of us is the ultimate patient who seeks help. We are all afraid of the disease, therefore we need a personal line of behavior that will be a support on the way.
Incorrect decision-making is fraught with troubles, including extreme ones, so you need to understand the algorithms and calculate your actions. This is a typical RISK MANAGEMENT SITUATION; it concerns each of us.