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Primary Drug Companies and Drugs Involved
The primary drugs responsible for the damaging effects of hormone replacement therapy and the drug companies that manufacture them are:
- Premarin (Wyeth), alone or when used in combination with Provera (Pharmacia/Upjohn/Pfizer), Cycrin (Wyeth), or MPA (Barr Laboratories or Greenstone Limited, a subsidiary of Pharmacia/Upjohn/Pfizer
- Prempro (Wyeth)
- Premphase (Wyeth)
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