| Ergotamine medihaler | Ergotamine (Er-got'-a-meen) |
| Erythrocin (Eh-rith'-ro-sin) | Erythromycin (Eh-rith-ro-mie'-sin) Stearate (Stair'-ate) |
| Esidrex (Es'-eh-dreks) | HCTZ |
| Etrafon (Eh'-tro-fon) | Amitriptyline (am-eh-trip'-teh-leen) & Perphenazine (per-fen'-a-zeen) |
| Fansidar (Fans'-eh-dar) | Pyrimethamine (pie-ri-meth'-a-meen) & Sulfadoxine (sul-fa-doks'-een) |
| Feldene (Fel-Deen) | Piroxicam (Pie-roks-eh-kam) |
| Feosol (Fee'-o-sol) | Ferrous (Fer'-rus) |
| Fergon (Fer-gon) | Ferrous (Fer-rus) gluconate |
| Fiorinal (fee -or'-eh-nol) | Butalbital (bu-tal'-beh-tal )& caffeine |
| Flagyl ( Fla-jil) | Metronidazole (Meh-tro-ni'-da-zole) |
| Flexeril (Fleks-eh-ril) | cyclobenzaprine (si-klo-bens-a-peen) |
| Fulvicin (Ful'-veh-sin) | Griseofulvin (Griz-ee-o-ful'-vin) |
| Gantrisin (Gant'-treh-sin) | Sulfisoxazole ( sul-feh-sox'-a-zole) |