Comment by slg

>Amazon tells you both, but since the retail products are (should be) identical, neither they nor you really care whether or not this particular box came from "Joe's Nutrition" or "Sally's Supplements"

Sounds like it is time for a "Falsehoods Programmers Believe About Retail Products" with the first entry being that every item with the same SKU is identical to every other item with that SKU.

You would think at the very least Amazon would need to maintain a chain of custody for each individual item that is meant for human consumption. What happens if there is a Tylenol poisoning [1] like scare with one of these supplements? Would Amazon legitimately have no way to track down the source of the contaminated product? If they can, what would be the possible explanation of not displaying the source to the user beyond "it is cheaper if we don't"?

[1] - https://en.wikipedia.org/wiki/Chicago_Tylenol_murders