PFIZER
| Date | Clue |
|---|---|
| 2024-07-07 | Big name in vaccines |
| 2018-10-12 | Big name in pharmaceuticals |
| 2016-12-06 | Big pharma company |
| 2016-06-10 | Big name in drugs |
| 2014-11-22 | Lipitor maker |
| 2013-04-26 | Viagra maker |
| 2010-01-01 | Xanax maker |
| 1999-04-25 | Warner-Lambert competitor |