The announcement by the U.S.Food and Drug Administration (FDA) that propoxyphene-containing products are finally going to be taken off the market – because of dangers previously known and acted upon, with bans announced in the UK almost six years ago, and in Europe, almost 1½ years ago – is a serious indictment of the FDA’s long-lasting unwillingness to protect people in this country from a deadly but barely effective painkiller. In announcing the ban in 2005, the UK stated that the efficacy of propoxyphene (sold generically and under the brand name Darvon) “is poorly established and the risk of toxicity in overdose, both accidental and deliberate, is unacceptable” and that “[I]n relation to safety, there is evidence that fatal toxicity may occur with a small multiple of the normal therapeutic dose and a proportion of fatalities are caused by inadvertent overdose.” The FDA’s claim that this is the first evidence that the drug is dangerous at the “standard therapeutic dose” thus rings dangerously hollow.
The FDA’s deadly delay in this case starkly illustrates how one of the most important public health concepts, the precautionary principle, was embraced by the UK and Europe, but was for too long recklessly rejected by the FDA. (more…)