1. Dietary Supplement Health and Education Act(DSHEA Public Law 103‐417 25 October1994; Codified at 42 USC 287C‐11.
2. T.Tsouderos. Dietary supplements: Manufacturing problems widespread FDA inspections show. Available at:http://articles.chicagotribune.com/2012‐06‐30/news/ct‐met‐supplement‐inspections‐20120630_1_dietary‐supplements‐inspections‐american‐herbal‐products‐association[21 April 2015].
3. ConsumerLab.com.FDA finds problems at 62% of supplement manufacturing sites in US and abroad. Available at:https://www.consumerlab.com/recall_detail.asp?recallid=10799[21 April2015].
4. DNA barcoding detects contamination and substitution in North American herbal products