favlyxa
Favlyxa (Fluorouracil) is a nucleoside metabolic inhibitor used to treat Breast Neoplasms, Basal Cell Carcinoma, Colonic Neoplasms, Head and Neck Neoplasms.
Fluorouracil · by Avyxa Holdings
Available as a generic: Fluorouracil
Key facts
- Active ingredient
- Fluorouracil
- Drug class
- Nucleoside Metabolic Inhibitor
- Form
- Injectable
- Strength
- Fluorouracil 2.5GM/100ML (25MG/ML) · Fluorouracil 250MG/10ML (25MG/ML)
- Type
- Prescription (Rx)
- Brand or generic
- Brand-name
- Manufacturer
- Avyxa Holdings
- What the pharmacy pays
- ~$0.61 per ml — not your price
- FDA application
- NDA220201
Drug class
How this class works, per Gemcitabine — LiverTox, NCBI Bookshelf (NIH).
May treat (source: NIH RxClass)
- breast neoplasms
- basal cell carcinoma
- colonic neoplasms
- head and neck neoplasms
- keratosis
- pancreatic neoplasms
See how Favlyxa ranks — best-rated nucleoside metabolic inhibitor for:
Dosage forms
Injectable
The forms currently marketed in the U.S., per the FDA National Drug Code Directory.
Ways to save
Ask for the generic
Same active ingredient, far cheaper. Is there a generic? →
Request a 90-day supply
Bulk fills usually lower the per-dose price vs monthly refills.
Use copay cards
Manufacturer copay cards & patient-assistance programs — especially for brand drugs.
Compare alternatives
A same-class option may cost less. See alternatives →
Frequently asked questions
- What does Favlyxa treat?
- Favlyxa (Fluorouracil) may be used to treat breast neoplasms, basal cell carcinoma, colonic neoplasms, head and neck neoplasms, keratosis, pancreatic neoplasms, based on NIH RxClass drug-classification data (conditions a drug may treat — not a verbatim copy of the FDA-approved label). This is general reference, not medical advice.
- How does Favlyxa work?
- Favlyxa is a nucleoside metabolic inhibitor. Nucleoside metabolic inhibitors are fake DNA building blocks that fast-dividing cancer cells mistake for the real thing. Once inside, they get incorporated into the cell's DNA and also block enzymes such as ribonucleotide reductase, which together halt DNA copying and cause the cancer cell to die.
- How much does Favlyxa cost?
- Nobody can tell you what you will pay — your price is set by your insurer's formulary, your deductible and the pharmacy's markup, and none of those are published. What IS published is what the pharmacy paid to acquire it: about $0.61 per ml, per the CMS NADAC survey. Treat that as the floor, not the quote — ask the pharmacist for the cash price as well as your copay, because for cheap generics the cash price often wins.
- Is there a coupon or discount for Favlyxa?
- pharmaranks is an independent ratings site, not a pharmacy — we don't issue coupons or sell Favlyxa. To pay less, ask your prescriber or pharmacist whether a generic equivalent exists, check the manufacturer's copay/savings card and patient-assistance program, and compare a pharmacy discount card against your insurance copay. Prices vary by pharmacy, insurance, and location, so always confirm at the counter. This is general reference, not medical or financial advice.
- Who makes Favlyxa?
- Favlyxa is marketed by Avyxa Holdings. You can see Avyxa Holdings's full profile, rating, and other products on pharmaranks.
- Is Favlyxa a brand-name or generic drug?
- Favlyxa is a brand-name product with the active ingredient Fluorouracil. Lower-cost generic equivalents containing Fluorouracil are available — ask your pharmacist.
- Is Favlyxa available over the counter?
- No. Favlyxa is a prescription (Rx) medication in the US — you need a prescription from a licensed clinician (in person or via telehealth); it isn't sold over the counter. For some conditions there are OTC alternatives — ask your pharmacist.
- What forms does Favlyxa come in?
- Favlyxa is currently marketed as injectable, per the FDA's National Drug Code Directory.
- What class of drug is Favlyxa?
- Favlyxa is classified as nucleoside metabolic inhibitor, per the FDA's Established Pharmacologic Class.
- Is Favlyxa FDA-registered?
- Favlyxa is on record with the U.S. FDA under application number NDA220201. You can verify this on its official FDA label.
Information is sourced from public FDA regulatory data. Provided for general reference only — not medical advice. Always consult a licensed professional and the current prescribing information.
What people report to the FDA about FLUOROURACIL
The FDA Adverse Event Reporting System (FAERS) collects reports from patients and clinicians. It holds 88,948 reports naming FLUOROURACIL — the active ingredient in Favlyxa, and the FDA flagged 94% of those reports as serious. The effects reported most often — leaving out reports about overdose, misuse or the condition being treated, which dominate the raw list for common medicines:
- diarrhoea8,208 reports
- neutropenia6,121 reports
- nausea6,043 reports
- vomiting4,837 reports
- neuropathy peripheral3,848 reports
- fatigue3,785 reports
- pyrexia3,579 reports
- thrombocytopenia3,525 reports
Read these as a signal, not a rate. A report does not mean FLUOROURACIL caused the effect — anyone can file one, and many describe people taking several medicines for several conditions. Crucially there is no denominator: FAERS does not record how many people took the drug, so these counts cannot be turned into “X% of patients” — a bigger number often just means a more widely used or more talked-about drug. Duplicates exist, and publicity drives reporting. For what is actually established, read the FDA label.
Source: openFDA drug/event (FAERS), retrieved September 25, 2026.
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