Diane-35 (cyproterone–estradiol), an androgen-blocking combination drug with contraceptive properties, was approved for use as a second-line treatment for severe acne in women. Because of concerns about liver toxicity and an increased risk of venous thromboembolism, warnings were sent to physicians in December 2002 advising them not prescribe Diane-35 for birth control or mild acne.
In this brief report, Barbara Mintzes and Steve Morgan show that prescription rates for Diane-35 in British Columbia remained essentially unchanged after the warning.
In January 2003, however, the CBC aired a television documentary that featured interviews with users and physicians who believed that Diane-35 was an ordinary birth-control pill. Immediately afterward, usage rates dropped dramatically. The investigators also found that of the 33 095 women who received at least one prescription for Diane-35, over 45% (15 064) had no recorded evidence of having had acne.
Widely broadcast news stories may, one surmises, be more influential than Health Canada (or this medical journal).
Source: Eurekalert & othersLast reviewed: By John M. Grohol, Psy.D. on 21 Feb 2009
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