Viagra dethroned as top spot

Pfizer’s Viagra has boasted the highest annual revenue in Korea’s competitive impotence market since its release in October 1999. But last year, Viagra gave up its top position in Korea to its competitor Cialis for the first time.

According to industry data, sales of Cialis totaled 26.9 billion won last year, topping Viagra’s 25.6 billion won.

Market insiders said that the fall of Viagra ...