How many unknown compounds are in your stack? Take the time to vet the products you use! User Digital-Jazz, in the Nootropics subreddit, 12 Mar 2015
DNA barcoding detects contamination and substitution in North American herbal products User Maxcactus, in the Health subreddit, 04 Nov 2013
DNA barcoding detects contamination and substitution in herbal supplements (up to 50% were contaminated) User greatplainsskeptic, in the skeptic subreddit, 21 Oct 2013