INTERNAL REVENUE SERVICE

As Table 2.16 shows for all listed companies the share of the best-selling product is below 20% while three US-based companies exceed this level (Pfizer’s Lipitor has 20.7% of sales, Merck’s Zocor has 22.7%, and Eli Lilly’s Zyprexa has 31.9%) and two other companies are very close to this threshold (Wyeth’s Effexor has 19.3% of sales ... ................
................