F6b - Fxy
- F6b - Fe-mesopone
- Febuxostat - Ffb
- Fff - Flecainide Acetate
- Flexeril - Fluocinonide
- Fluorescein - Fm2
- Fmf - Formycin
- Formycin B - Fr221647
- Fr233623 - Fulvestrant
- Fumagillin - Fxy