|
warning regarding supplements
Public release date: 11-Oct-2013
Contact: Steve Newmaster snewmast@uoguelph.ca 519-824-4120 x56002 University of Guelph Study: Herbal products omit ingredients, contain fillers Consumers of natural health products beware. The majority of herbal products on the market contain ingredients not listed on the label, with most companies substituting cheaper alternatives and using fillers, according to new research from the University of Guelph. The study, published today in the open access journal BMC Medicine, used DNA barcoding technology to test 44 herbal products sold by 12 companies. Only two of the companies provided authentic products without substitutions, contaminants or fillers. Overall, nearly 60 per cent of the herbal products contained plant species not listed on the label. Researchers detected product substitution in 32 per cent of the samples. More than 20 per cent of the products included fillers such as rice, soybeans and wheat not listed on the label. "Contamination and substitution in herbal products present considerable health risks for consumers," said lead author Steven Newmaster, an integrative biology professor and botanical director of the Guelph-based Biodiversity Institute of Ontario (BIO), home of the Canadian Centre for DNA Barcoding. "We found contamination in several products with plants that have known toxicity, side effects and/or negatively interact with other herbs, supplements and medications." One product labelled as St. John's wort contained Senna alexandrina, a plant with laxative properties. It's not intended for prolonged use, as it can cause chronic diarrhea and liver damage and negatively interacts with immune cells in the colon. Several herbal products contained Parthenium hysterophorus (feverfew), which can cause swelling and numbness in the mouth, oral ulcers, and nausea. It also reacts with medications metabolized by the liver. One ginkgo product was contaminated with Juglans nigra (black walnut), which could endanger people with nut allergies. Unlabelled fillers such as wheat, soybeans and rice are also a concern for people with allergies or who are seeking gluten-free products, Newmaster said. "It's common practice in natural products to use fillers such as these, which are mixed with the active ingredients. But a consumer has a right to see all of the plant species used in producing a natural product on the list of ingredients." Until now, verifying what's inside capsules or tablets has posed challenges, Newmaster said. His research team developed standard methods and tests using DNA barcoding to identify and authenticate ingredients in herbal products. "There is a need to protect consumers from the economic and health risks associated with herbal product fraud. Currently there are no standards for authentication of herbal products." Medicinal herbs now constitute the fastest-growing segment of the North American alternative medicine market, with more than 29,000 herbal substances sold, he said. More than 1,000 companies worldwide make medicinal plant products worth more than $60 billion a year. About 80 per cent of people in developed countries use natural health products, including vitamins, minerals and herbal remedies. Canada has regulated natural health products since 2004. Regulators face a backlog of licence applications, and thousands of products on the market lack a full product licence. Globally, regulatory problems involving natural health products continue to affect consistency and safety, Newmaster said. "The industry suffers from unethical activities by some of the manufacturers." The study also involved research associate Subramanyam Ragupathy, U of G student Meghan Gruric and Sathishkumar Ramalingam of the Bharathiar University in India. ### This research was supported by Genome Canada through the Ontario Genomics Institute; the Canada Foundation for Innovation; International Science and Technology Partnership Canada; and the Social Sciences and Humanities Research Council. |
Re: warning regarding supplements
It is such a nightmare that these products aren't licensed - even with the backlog. We buy in good faith and they should be sold likewise. (I am a bit of a daydreamer I think....)
|
Re: warning regarding supplements
http://www.usp.org/usp-verification-...ry-supplements
Look for the USP logo on dietary supplements. Europe also has an inspection program. http://www.usp.org/usp-verification-...ed-supplements Just because an item is "inspected" it does not always translate to safe. The current chicken/salmonella problem is a good example. The toxic mold that contaminated steroid injections and killed 55 people is another example. It doesn't hurt to read up on a supplement and the company that produces it before purchasing it. As an enthusiastic supplement user, I can say I've bought a lot of supplements. I always start out taking much less than recommended to see how my body reacts. I learned the hard way when a family member sent me a box of supplements and told me to take 2. I was through the roof, she was barely affected. I needed 1/20th of the amount to get the same benefits. I love reading the stories about how people's lives drastically change because of a supplement. But it typically doesn't translate to the individual because dietary needs are different. Many times you are just spending money on another bottle that will be tried, then sits on the shelf. Twice, however, I've had dramatic changes in my health due to supplement use. The first was with selenium after many surgeries. I had excruciating fatigue and brain fog that was so bad I was pretty much inop. I experimented with the selenium after much reading on the internet. My fatigue and brain fog resolved significantly over the next few hours after the first tablet. I kept taking it and was back to my old self within days. Kelp eliminated breast pain that was a 10, even after taking Tylenol. Within hours. I had to take it for a couple years, and still am hesitant to stop taking it. I feel that when I try a supplement - I am a clinical trial of 1 - the principal investigator, the clinical trial nurse, and the patient, all rolled up into one. |
Re: warning regarding supplements
Good information
|
Re: warning regarding supplements
This is disturbing .....
Are there any lists of "safe" companies? |
Re: warning regarding supplements
USP Verified Dietary Supplements
Click on the brand names below to see a list of USP Verified products and a list of the retail stores where you can buy the products.
|
Re: warning regarding supplements
I am very surprised not to see Neways on this list - I was under the impression that they are a fantastic supplement company - any thought anyone?
|
Re: warning regarding supplements
Wikipedia describes them with a history of tax fraud, an FDA recall and product contamination. I am not familiar with Neways myself.
|
| All times are GMT -7. The time now is 09:48 PM. |
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2025, vBulletin Solutions, Inc.
Copyright HER2 Support Group 2007 - 2021