[sjy]

According to this article, the only countries to allow direct marketing to consumers are New Zealand and the United States, and doctors in NZ noticed a dramatic change when direct marketing became prevalent from 2002.

Toop L and Mangin D. The impact of advertising prescription medicines directly to consumers in New Zealand: lessons for Australia (2006) http://www.australianprescriber.com/magazine/29/2/article/78...