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Don't panic, it's organic: dispute over natural health products regulations continues

Barbara Sibbald
CMAJ July 24, 2001 165 (2) 200-200-a;
Barbara Sibbald
CMAJ
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Critics of Health Canada's proposed regulatory framework for natural health products say that its standards of evidence for safety serve manufacturers and complementary care providers, not the people who use the products.

The proposed regulatory framework (www.hc-sc.gc.ca/hpb/onhp), which will likely go before Parliament early next year, states that standards of evidence for safety and health claims will “not be limited to double-blind clinical trials.”

According to the latest framework, the directorate will use 3 levels of evidence: randomized controlled trials (RCTs), existing (traditional) use and initial evidence (products for which the collection of evidence has just begun).

“Consumers don't want to wait 20 years,” says Philip Waddington, head of the Natural Health Products Directorate (NHPD). Waddington, a naturopath, says his directorate will try “to provide access while ensuring safety and effectiveness. Clinical trials are one way to gain evidence on whether it works. Years of usage is another way. We will look at the whole body of evidence.”

However, Canadians for Rational Health Policy (CRHP), a national association of 60 scientists and physicians, wants pre-market efficacy testing for all natural health products. “Dropping standards will only protect the interests of the producers and providers, not the public,” says Dr. Lloyd Oppel, the Vancouver emergency physician who heads CRHP. He describes the traditional-use argument as “astoundingly weak.”

Waddington says his office will attempt to educate consumers if other standards of evidence are allowed. For example, there isn't an RCT demonstrating that echinacea is useful in preventing colds and flu, but this is a traditional use. The NHPD may end up requiring labelling such as: “Traditionally used for…,” Waddington says.

The recommendation not to limit standards to RCTs was first suggested by the NHPD's transition team in 1999, and the view was reinforced during cross-Canada consultations last year, says Waddington.

However, Oppel takes “a very dim view” of the consultation process, which he described as a “PR exercise, not an effort to get scientific information.” Members of his group were refused a spot on the NHPD advisory panel, and their presentation to Health Canada asking for more rigorous standards was ignored. “It's clear the government wants to placate the public, its voters,” says Oppel.

There is no international consensus on how to regulate natural health products. The US lists them as dietary supplements, with the onus on manufacturers to have data supporting their claims. At the other extreme, Germany regulates the products as drugs.

Although the Therapeutic Products Program requires manufacturers to pay for the drug-approval process, the same cost-recovery rules won't be applied to makers of natural health products.

“The impact on small manufacturers is one of the prime drivers behind the NHPD,” said Waddington. “They're smaller businesses, therefore [the regulations] have to be appropriate.”

Figure

Figure. Are standards of evidence for natural products too weak? Photo by: Barbara Sibbald

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CMAJ
Vol. 165, Issue 2
24 Jul 2001
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Don't panic, it's organic: dispute over natural health products regulations continues
Barbara Sibbald
CMAJ Jul 2001, 165 (2) 200-200-a;

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Don't panic, it's organic: dispute over natural health products regulations continues
Barbara Sibbald
CMAJ Jul 2001, 165 (2) 200-200-a;
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