http://articles.mercola.com/sites/articles/archive/2008/01/02/zantac.aspxUS sales of former best-selling ulcer treatment ranitidine (Zantac) fell by 55% Zantac, which was the world's biggest-selling drug for 11 years until last year, currently faces eight generic competitors in the key US market. According to market researchenCommunityServer 2008.5 SP1 (Build: 31106.3070)