I think with the state of things, Amazon should be completely banned from selling anything that might be construed a supplement. They have such lax controls that your protein powder or vitamin pills might contain pretty much anything. Even reputable brands bought from their brand storefront might be counterfeit [1]. You’d be shocked at the number of things that are counterfeit. A friend of mine recently bought a niche optical device, and it turned out it was a fake, despite being allegedly sold by the manufacturer. Amazon needs to stop co-mingling inventory, and it also needs to stop selling things that have no safety testing whatsoever, especially in the food and supplement space.
https://www.inc.com/sonya-mann/amazon-counterfeits-no-starch...