On February 3, 2015,  the New York State Attorney  General’s office announced that four major chains  (GNC, Target,  Walmart, and Walgreens) were selling herbal supplements that  could not  be verified to contain the labeled substances in the listed   ingredients.  Worse yet, many of the  substances tested and found were  not listed on the labels.  The letters sent out by the State Attorney   General ordered the retailers to immediately stop selling the  supplements.  
What most people do not realize  is that herbal  supplements are not regulated to protect consumers.  New  York state is introducing a bill to  regulate herbs and supplements.     
In the brands tested only 21%  had verified ingredients  that were listed on the product label. The  remaining 79% contained other  fillers that included rice, beans, pine,  citrus, asparagus, primrose, wheat,  houseplants, wild carrot, and other  fillers.   These could be potentially dangerous to people with  allergies to these  substances.  Of note, one sample contained  only 4%  of the particular ingredient that was listed on the label.
The bigger question  is:  How is  a person to know what herb or  supplement to trust?  There are a couple   of options—some require a paid subscription.   But the cost could well  be worth an investment to make sure that the  herbs and supplements are  of stated potency and dollar value:  
-                       Consumerlabs.com is a useful resource for herbs (paid subscription required).
-                       The German E Commission has information about the safety of herbs. However, it has not been updated since 1994, but some still consider the information valid.
-                       American Botanical Council is a resource for herbs in general and houses an English version of the German E Commission as well as an expanded version issued in 2000 (paid subscription required).
-                       HCV Advocate has an Herbal Glossary and Fact Sheets that we are in the process of updating.
-                       Amazon.com sells many books on herbs that provide some information about drug-drug interactions.
Always tell your medical provider  of any supplement or  herb (prescribed or over-the-counter) that you  are currently taking for  potential drug-drug interactions.
The Full Prescribing   Information for a particular Food and Drug Administration (FDA) approved  drug  lists all the possible drug-drug interactions.   For instance,  St. John’s wort (a common herb) should not be taken when  people are  being treated with HARVONI or VIEKIRA PAK.  All of the ‘Labels’ can be  found on our  website  http://www.hcvadvocate.org/hepatitis
/treatment.asp#FDAPI
/treatment.asp#FDAPI
While the tests were conducted  just in New York State  (in 13 regions) it is likely that the same  ingredients are similar to store  brands found in other states.  The  tests  were conducted using a DNA testing technique performed by Dr.  James A. Schulte  II of Clarkson University in Potsdam, N.Y. on samples  purchased at the stores  from across New York State.  
I have copied the information from the New York  Attorney’s press release about the herbal preparations tested.   
GNC:
-                       Six “Herbal Plus” brand herbal supplements per store were purchased and analyzed: Gingko Biloba, St. John’s Wort, Ginseng, Garlic, Echinacea, and Saw Palmetto. Purchased from four locations with representative stores in Binghamton, Harlem, Plattsburgh & Suffolk.
-                       Only one supplement consistently tested for its labeled contents: Garlic. One bottle of Saw Palmetto tested positive for containing DNA from the saw palmetto plant, while three others did not. The remaining four supplement types yielded mixed results, but none revealed DNA from the labeled herb.
-                       Of 120 DNA tests run on 24 bottles of the herbal products purchased, DNA matched label identification 22% of the time.
-                       Contaminants identified included asparagus, rice, primrose, alfalfa/clover, spruce, ranuncula, houseplant, allium, legume, saw palmetto, and Echinacea.
Target:
-                       Six “Up & Up” brand herbal supplements per store were purchased and analyzed: Gingko Biloba, St. John’s Wort, Valerian Root, Garlic, Echinacea, and Saw Palmetto. Purchased from three locations with representative stores in Nassau County, Poughkeepsie, and Syracuse.
-                       Three supplements showed nearly consistent presence of the labeled contents: Echinacea (with one sample identifying rice), Garlic, and Saw Palmetto. The remaining three supplements did not reveal DNA from the labeled herb.
-                       Of 90 DNA tests run on 18 bottles of the herbal products purchased, DNA matched label identification 41% of the time.
-                       Contaminants identified included allium, French bean, asparagus, pea, wild carrot and saw palmetto.
Walgreens:
-                       Six “Finest Nutrition” brand herbal supplements per store were purchased and analyzed: Gingko Biloba, St. John’s Wort, Ginseng, Garlic, Echinacea, and Saw Palmetto. Purchased from three locations with representative stores in Brooklyn, Rochester and Watertown.
-                       Only one supplement consistently tested for its labeled contents: Saw Palmetto. The remaining five supplements yielded mixed results, with one sample of garlic showing appropriate DNA. The other bottles yielded no DNA from the labeled herb.
-                       Of the 90 DNA test run on 18 bottles of herbal products purchased, DNA matched label representation 18% of the time.
-                       Contaminants identified included allium, rice, wheat, palm, daisy, and dracaena (houseplant).
Walmart:
-                       Six “Spring Valley” brand herbal supplements per store were purchased and analyzed: Gingko Biloba, St. John’s Wort, Ginseng, Garlic, Echinacea, and Saw Palmetto. Purchased from three geographic locations with representative stores in Buffalo, Utica and Westchester.
-                       None of the supplements tested consistently revealed DNA from the labeled herb. One bottle of garlic had a minimal showing of garlic DNA, as did one bottle of Saw Palmetto. All remaining bottles failed to produce DNA verifying the labeled herb.
-                       Of the 90 DNA test run on 18 bottles of herbal products purchased, DNA matched label representation 4% of the time.
-                       Contaminants identified included allium, pine, wheat/grass, rice, mustard, citrus, dracaena (houseplant), and cassava (tropical tree root).
A.G. Schneiderman Asks Major Retailers To Halt Sales Of Certain Herbal Supplements As DNA Tests Fail To Detect Plant Materials Listed On Majority Of Products Tested.
http://www.ag.ny.gov/press-release/ag-schneiderman-asks-major-retailers-halt-sales-certain-herbal-supplements-dna-tests
http://hcvadvocate.org/news/newsLetter/2015/advocate0215_mid.html#2
 
 
  
  
 
