factor II factor IX factor VII factor VIII factor VIII inhibitor bypassing activity factor X factor XIII famciclovir famotidine fampridine famtozinameran faricimab Feathers febuxostat febuxostat hemihydrate febuxostat magnesium fedratinib dihydrochloride monohydrate felbinac felodipine fenfluramine hydrochloride fenofibrate fentanyl fentanyl citrate Ferric carboxymaltose ferric derisomaltose ferric maltol ferrous chloride ferrous fumarate ferrous gluconate ferrous sulfate Fescue pollen (Festuca pratensis) fesoterodine fumarate feverfew herb fexofenadine hydrochloride fezolinetant fidaxomicin filgotinib maleate filgrastim finasteride finerenone fingolimod hydrochloride flavoxate hydrochloride flecainide acetate flucloxacillin sodium flucloxacillin sodium monohydrate fluconazole fludarabine phosphate fludrocortisone acetate fludroxycortide flumazenil flumetasone pivalate fluocinolone acetonide fluorescein sodium fluorometholone fluorouracil fluoxetine fluoxetine hydrochloride flupentixol decanoate flupentixol dihydrochloride flurazepam monohydrochloride flurbiprofen flurbiprofen sodium flutamide fluticasone furoate fluticasone propionate fluvastatin sodium fluvoxamine maleate folic acid folinic acid follitropin alfa follitropin delta fondaparinux sodium formoterol fumarate dihydrate fosamprenavir calcium fosaprepitant dimeglumine foscarbidopa foscarnet sodium hexahydrate foscarnet trisodium hexahydrate fosfomycin fosfomycin trometamol fosinopril sodium foslevodopa fosphenytoin sodium fostamatinib disodium hexahydrate fostemsavir tromethamine Foxtail pollen (Alopecurus pratensis) framycetin sulfate frangula bark fremanezumab frovatriptan succinate monohydrate fucus dry extract fulvestrant furosemide fusidic acid fusidic acid hemihydrate