Anthony HopkinsDr. John Harvey Kellogg | Dr. John Harvey Kellogg |
Bridget FondaEleanor Lightbody | Eleanor Lightbody |
Matthew BroderickWilliam Lightbody | William Lightbody |
John CusackCharles Ossining | Charles Ossining |
Dana CarveyGeorge Kellogg | George Kellogg |
Michael LernerGoodloe Bender | Goodloe Bender |
Colm MeaneyDr. Lionel Badger | Dr. Lionel Badger |
John NevilleEndymion Hart-Jones | Endymion Hart-Jones |
Lara Flynn BoyleIda Muntz | Ida Muntz |
Traci LindNurse Irene Graves | Nurse Irene Graves |
Camryn ManheimVirginia Cranehill | Virginia Cranehill |
Roy BrocksmithPoultney Dab | Poultney Dab |
Norbert WeisserDr. Spitzvogel | Dr. Spitzvogel |
Monica ParkerMrs. Tindermarsh | Mrs. Tindermarsh |
Jacob ReynoldsYoung George Kellogg | Young George Kellogg |
Michael GoodwinDr. Frank Linniman | Dr. Frank Linniman |
Marshall EfronBartholomew Bookbinder | Bartholomew Bookbinder |
| AAleksandr SlanksnisMr. Unpronounceable | Mr. Unpronounceable |
Carole ShelleyMrs. Hookstratten | Mrs. Hookstratten |
Gabriel BarreDesk Clerk | Desk Clerk |
| RRobert TraceyErnest O'Reilly | Ernest O'Reilly |
| AAnn TuckerHannah | Hannah |
| JJemila EricsonMrs. Kellogg | Mrs. Kellogg |
Marianne MuellerleileNurse Bloethal | Nurse Bloethal |
| JJean WenderlichRalph | Ralph |
Mark Jeffrey MillerWoodbine | Woodbine |
| JJoanne PankowLaughing Lady | Laughing Lady |
| MMary Jane CorryPianist | Pianist |
| RRich ValliereReporter #1 | Reporter #1 |
| GGeorge NannarelloReporter #2 | Reporter #2 |