'Dangerous' Herbal Supplement Claims Under Fire in Government Report

May 26, 2010 — -- Sales people marketing herbal supplements gave "potentially dangerous advice" to undercover government investigators, according to a new report from the Government Accountability Office.

The report, released in conjunction with today's Senate committee hearing on dietary supplements and the elderly, revealed the results of an investigation in which GAO investigators posed as elderly customers to ask sales staffers at 22 storefront and mail-order retailers about herbal dietary supplements. The GAO also reviewed marketing claims made on 30 retail websites.

Investigators found that sales people gave them "potentially dangerous advice," such as suggesting that they could take supplements instead of prescription medication, according to the report.

"What a lot of people do is ... they start taking both at the same time and then slowly you will stop taking the other prescription medicine and just continue with this," said one seller on an audio recording made by the GAO.

A seller during another GAO sales call said that a combination supplements can prevent or cure serious conditions.

"My mom and dad both have high cholesterol and problems maintaining blood pressure; I don't have either one, but my parents have both. If I wouldn't have started taking my product ... I would eventually get it, because it's in my genes," the seller told the GAO.

When the GAO repeated the false information back, the seller once again claimed it was true.

In some cases, the promises were not just false, they were dangerous. One herbal supplement seller said that a customer could take Ginkgo biloba with aspirin to improve memory.

The Food and Drug Administration warns that combining aspirin and ginkgo could increase a person's risk of internal bleeding, the GAO said.

"In making these claims, sellers put the health of consumers at risk," Greg Kurtz, head of the GAO Forensic Audits and Special Investigations unit, said in remarks prepared for the committee hearing.

The GAO also listed what it called deceptive claims made by herbal supplement marketers tied to Ginkgo biloba and other popular supplements as ginseng, including assertions that the latter can cure cancer and that the former can treat both impotence and Alzheimer's disease.

Steve Mister, the president and CEO of the Council for Responsible Nutrition, a trade association for supplement manufacturers and ingredient suppliers, defended the industry in an interview with ABCNews.com.

"We understand that there are going to be examples of a few industry outliers who may be violating the law, but that is certainly not representative for the vast majority of the industry which is abiding by the law," he said.

Mister, who said Tuesday that he had not yet seen the GAO report, was scheduled to testify at today's hearing.GAO Comment: NIH (National Institutes of Health) does not recognize this herbal supplement as a treatment for obesity, diabetes, or cardiovascular disease.

Claim: Ginseng cures diseases, including cancer.
GAO Comment: NIH specifically recommends that breast and uterine cancer patients avoid this product, as it may have an adverse interaction with some cancer drugs.

Claim: Garlic can be taken in lieu of prescribed high blood pressure medication.
GAO Comment: Evidence that this product reduces high blood pressure is unclear, and both NIH and FDA state that no dietary supplement can take the place of prescribed medicines.

Claim: Ginkgo biloba can be taken with a daily aspirin prescription.
GAO Comment: Taking this product with aspirin may increase the risk of bleeding.

Claim: Ginkgo biloba treats Alzheimer's disease, depression, and impotence.

GAO Comment: No clear scientific evidence supports any of these treatment claims.