Here you’ll find 49 Medications that start with F that begin with F, organized from “famciclovir” to “furosemide”. This selection includes antivirals, diuretics, anticoagulants and other widely used medicines across many common conditions.
Medications that start with F are generic drugs whose names begin with the letter F and appear in everyday clinical practice. Famciclovir is a notable example, familiar to patients for treating shingles and cold sores.
Below you’ll find the table with Generic name, Drug class, Common uses, and Common side effects.
Generic name: Shows the standard medication name so you can identify the drug regardless of brand or regional naming.
Drug class: Lists the therapeutic group so you quickly see how the medicine works and relates to other drugs.
Common uses: Summarizes the typical conditions treated so you can match a medicine to its usual clinical purpose.
Common side effects: Highlights frequent adverse effects so you know what symptoms to expect and what to report to caregivers.
Last updated: September 28, 2025. Medical disclaimer: This list is informational and does not replace professional medical advice.
Medications that start with F
| Name | Brand names | Drug class | Common uses |
|---|---|---|---|
| famotidine | Pepcid; Pepcid AC | H2 blocker | Gastric ulcer; GERD; heartburn |
| famciclovir | Famvir | Antiviral (guanosine analogue) | Herpes zoster; genital herpes |
| fentanyl | Duragesic; Sublimaze; Actiq | Opioid analgesic | Severe pain; anesthesia adjunct |
| fenofibrate | Tricor; Lofibra; Lipidil | Fibrate (PPARα agonist) | High triglycerides; mixed dyslipidemia |
| fenofibric acid | Trilipix | Fibrate derivative | High triglycerides; dyslipidemia |
| fesoterodine | Toviaz | Antimuscarinic | Overactive bladder; urinary urgency |
| febuxostat | Uloric | Xanthine oxidase inhibitor | Gout (hyperuricemia) |
| felodipine | Plendil | Dihydropyridine calcium channel blocker | Hypertension |
| ferrous sulfate | Feosol; Slow Fe; Ferro-Sequels | Iron supplement | Iron-deficiency anemia |
| finasteride | Proscar; Propecia | 5α-reductase inhibitor | Benign prostatic hyperplasia; male pattern baldness |
| fexofenadine | Allegra | Second-generation antihistamine | Allergic rhinitis; urticaria (hives) |
| fluoxetine | Prozac; Sarafem | SSRI antidepressant | Depression; OCD; bulimia; panic disorder |
| fluconazole | Diflucan | Azole antifungal | Vaginal, oral, systemic fungal infections |
| fluticasone | Flonase; Flovent; Cutivate | Corticosteroid (inhaled/nasal) | Allergic rhinitis; asthma |
| furosemide | Lasix | Loop diuretic | Edema; heart failure; hypertension |
| fosphenytoin | Cerebyx | Anticonvulsant (prodrug) | Status epilepticus; seizure control |
| fosamprenavir | Lexiva | Protease inhibitor (HIV) | HIV infection (antiretroviral therapy) |
| fosfomycin | Monurol | Phosphonic acid antibiotic | Uncomplicated urinary tract infection |
| fostamatinib | Tavalisse | SYK inhibitor | Chronic immune thrombocytopenia (ITP) |
| fingolimod | Gilenya | S1P receptor modulator | Multiple sclerosis (relapsing) |
| fluvastatin | Lescol | HMG-CoA reductase inhibitor | High cholesterol; cardiovascular risk reduction |
| flutamide | Eulexin | Antiandrogen | Prostate cancer (combined therapy) |
| fluphenazine | Prolixin | Typical antipsychotic | Schizophrenia; psychosis |
| flunitrazepam | Rohypnol | Benzodiazepine | Short-term severe insomnia in some countries |
| fluvoxamine | Luvox | SSRI antidepressant | OCD; depression |
| fluocinolone | Synalar; Capex | Topical corticosteroid | Dermatitis; scalp inflammation |
| fluorouracil | Efudex; 5-FU | Antimetabolite chemotherapy | Various cancers; topical skin lesions |
| fludarabine | Fludara | Purine analog chemotherapy | Chronic lymphocytic leukemia (CLL) |
| fulvestrant | Faslodex | Estrogen receptor degrader | Advanced ER-positive breast cancer |
| foscarnet | Foscavir | Antiviral (pyrophosphate analogue) | CMV; resistant herpes infections |
| fosaprepitant | Emend (IV) | NK1 receptor antagonist | Chemotherapy-induced nausea |
| felbamate | Felbatol | Anticonvulsant | Refractory epilepsy (partial seizures) |
| formoterol | Foradil; Oxis; Perforomist | Long-acting β2 agonist (LABA) | Asthma (maintenance); COPD |
| flucloxacillin | Floxapen; Staphcillin | Penicillinase-resistant penicillin | Staphylococcal infections (skin, bone) |
| flumazenil | Romazicon; Anexate | Benzodiazepine antagonist | Reversal of benzodiazepine sedation/overdose |
| fluorometholone | FML | Ophthalmic corticosteroid | Eye inflammation (ophthalmic use) |
| fluocinonide | Lidex; Vanos | Topical corticosteroid | Inflammatory skin conditions |
| fenoprofen | Nalfon | NSAID | Pain; inflammation |
| fosinopril | Monopril | ACE inhibitor | Hypertension; heart failure |
| favipiravir | Avigan | RNA polymerase inhibitor (antiviral) | Influenza; emergency use in some viral infections |
| flupenthixol | Fluanxol | Typical antipsychotic | Schizophrenia; depression adjunct (some regions) |
| follitropin alfa | Gonal-f; Follistim | Recombinant FSH (fertility) | Ovulation induction; assisted reproduction |
| filgrastim | Neupogen; Zarzio; Nivestim | G-CSF (growth factor) | Neutropenia from chemotherapy |
| flibanserin | Addyi | Serotonin receptor modulator | Hypoactive sexual desire disorder (women) |
| florbetaben | Neuraceq | PET imaging agent (amyloid tracer) | Alzheimer’s disease imaging |
| florbetapir | Amyvid | PET imaging agent (amyloid tracer) | Alzheimer’s disease imaging |
| flucytosine | Ancobon | Antifungal (pyrimidine analogue) | Serious systemic fungal infections |
| frovatriptan | Frova | Triptan (5-HT1 agonist) | Acute migraine attacks |
| fludrocortisone | Florinef | Mineralocorticoid | Addison’s disease; orthostatic hypotension |
Descriptions
famotidine
Reduces stomach acid to treat ulcers and heartburn. Watch for kidney dosing and possible headache or constipation.
famciclovir
Antiviral taken for shingles and cold sores; may cause headache, nausea, and rarely allergic reactions.
fentanyl
Very potent opioid for severe pain or anesthesia. High risk of respiratory depression, dependence, and interactions with other sedatives.
fenofibrate
Lowers triglycerides and can modestly raise HDL. May affect liver tests and rarely cause muscle problems, especially with statins.
fenofibric acid
Active form of fenofibrate for triglyceride control. Similar safety: monitor liver and muscle symptoms.
fesoterodine
Reduces bladder spasms to decrease urgency and leaks. Can cause dry mouth, constipation, blurred vision, or urinary retention.
febuxostat
Lowers uric acid to prevent gout attacks. Rare cardiovascular risk and liver enzyme changes; discuss risks if heart disease present.
felodipine
Lowers blood pressure by relaxing vessels. Commonly causes leg swelling, flushing, dizziness; monitor blood pressure.
ferrous sulfate
Oral iron to treat anemia. Can cause stomach upset and dark stools; keep away from children (overdose risk).
finasteride
Reduces DHT to shrink prostate or treat hair loss. Can affect sexual function and is contraindicated in pregnancy exposure.
fexofenadine
Non-sedating antihistamine for allergies. Fewer drowsy effects than older antihistamines.
fluoxetine
Common SSRI for depression and anxiety disorders. May cause nausea, sleep changes, sexual side effects; watch for serotonin syndrome.
fluconazole
Oral antifungal used for yeast infections and others. Can interact with many drugs and affect liver function.
fluticasone
Topical steroid for allergies or asthma control. Local irritation and, with long-term use, possible systemic steroid effects.
furosemide
Powerful diuretic to remove excess fluid. Can cause low potassium, dehydration, and hearing changes at high doses.
fosphenytoin
IV prodrug of phenytoin for seizures. Monitor heart rhythm and blood levels; can cause dizziness or rash.
fosamprenavir
Used in HIV regimens; may cause rash, gastrointestinal upset, and interact with many drugs.
fosfomycin
Single-dose oral antibiotic for bladder infections. Generally well tolerated; not for severe kidney infections.
fostamatinib
Oral kinase inhibitor to raise platelet counts in ITP. Can cause diarrhea, hypertension, or liver test changes.
fingolimod
Reduces MS relapses by trapping lymphocytes. Requires first-dose monitoring for heart effects; risk of infections.
fluvastatin
Statin to lower LDL cholesterol. Watch for muscle pain and liver enzyme abnormalities.
flutamide
Blocks androgen effects in prostate cancer. Can cause liver toxicity and hot flashes.
fluphenazine
Older antipsychotic effective for psychosis. May cause movement disorders (EPS), sedation, and metabolic effects.
flunitrazepam
Potent sedative/hypnotic used in some places; high risk of dependence, misuse, and memory impairment.
fluvoxamine
SSRI often used for OCD. Similar side effects to other SSRIs; many drug interactions possible.
fluocinolone
Topical steroid for skin conditions. Long-term use can thin skin or cause local irritation.
fluorouracil
Chemotherapy agent used systemically or topically for skin cancers. Causes local irritation, GI effects, and bone marrow suppression.
fludarabine
Chemotherapy for blood cancers; can suppress bone marrow and immune system.
fulvestrant
Injectable therapy for hormone-resistant breast cancer. May cause injection-site pain and menopausal symptoms.
foscarnet
IV antiviral for resistant viral infections. Can cause kidney injury and electrolyte imbalances.
fosaprepitant
IV anti-nausea medication given with chemo. Can cause infusion reactions and interacts with some drugs.
felbamate
Effective anticonvulsant but rare severe liver failure and aplastic anemia risks; used with caution.
formoterol
Long-acting inhaled bronchodilator for maintenance therapy. Not for acute relief; use with inhaled steroid in asthma.
flucloxacillin
Penicillin antibiotic for staph infections. May cause allergic reactions or liver enzyme changes.
flumazenil
Used in emergencies to reverse benzodiazepines. Can precipitate seizures in chronic benzodiazepine users.
fluorometholone
Steroid eye drop to reduce inflammation. Long-term use can raise eye pressure or increase infection risk.
fluocinonide
Potent topical steroid for eczema/psoriasis. Can thin skin and cause systemic effects if overused.
fenoprofen
Older NSAID for pain and inflammation. Risk of gastrointestinal bleeding and kidney effects like other NSAIDs.
fosinopril
Lowers blood pressure and improves heart function. Monitor for cough, high potassium, and rare angioedema.
favipiravir
Antiviral approved in some countries for influenza and emergent use. Can cause elevated uric acid and liver effects.
flupenthixol
Used for psychosis and mood disorders in some countries. May cause movement disorders and sedation.
follitropin alfa
Injected hormone helps stimulate egg development. Can cause ovarian hyperstimulation syndrome (OHSS) and multiple pregnancy risk.
filgrastim
Stimulates white blood cell production to prevent infections after chemo. Can cause bone pain and spleen enlargement.
flibanserin
Oral treatment for low sexual desire in premenopausal women. Can cause dizziness, low blood pressure, and interactions with alcohol.
florbetaben
Radiotracer used to image brain amyloid plaques. Used in diagnostics; requires PET scan and radiology services.
florbetapir
Radiotracer for detecting brain amyloid in suspected Alzheimer’s. Diagnostic use only; involves radioactive injection.
flucytosine
Oral antifungal often combined with amphotericin B. Can cause bone marrow suppression and GI upset; monitor blood counts.
frovatriptan
Oral migraine medication with long duration. Not for use with certain heart disease; may cause chest tightness or dizziness.
fludrocortisone
Replacement steroid for low aldosterone states. Can cause high blood pressure, low potassium, and fluid retention.