Unauthorized Marketplace Listings: The Counterfeit Risk, Explained

This review's own research cites a specific, sourced statistic worth understanding directly: roughly one in four items in some supplement categories on open marketplaces are counterfeit.

What the actual risks are

Marketplace supplement listings in general carry three specific risks per our own review: expired or badly stored stock, counterfeit packaging around a different product, and prices padded above the official rate.

Why we're not accusing any specific seller, just describing the channel

A 2024 NSF-cited statistic on counterfeit rates in some categories isn't an accusation against any particular seller — it's simply how unauthorized channels work structurally, worth understanding as a category-wide risk.