How to Save Money on Fluorouracil in 2026: Coupons, Discounts, and Patient Assistance

Fluorouracil — known as 5-FU and sold under brand names like Adrucil (injection) and Efudex (cream) — is a widely used cancer and dermatology drug. While the generic form is considerably less expensive than many newer oncology drugs, costs can still add up quickly without insurance, especially for topical formulations or ongoing treatment. Here's how to find the best prices and programs available in 2026.

How Much Does Fluorouracil Cost Without Insurance?

Fluorouracil comes in two main forms with very different pricing:

Topical Cream

Generic fluorouracil 5% cream (40g): Average retail price ~$200-$364. With GoodRx or SingleCare, as low as $29-$34.

Tolak 4% cream (40g brand): About $233 without insurance; with SingleCare savings card, down to approximately $43.

Carac 0.5% cream: Higher cost; intermittent supply issues. Generic alternatives preferred by most insurers.

IV Injection (Chemotherapy)

Fluorouracil injection (50 mg/mL): Four 10 mL vials cost approximately $65-$145 without insurance. With GoodRx, as low as $5.90 per vial (Adrucil equivalent).

Note: IV fluorouracil is almost always administered in a clinical setting (infusion center or hospital). The drug cost is typically included in the overall infusion billing, which is covered under medical benefits (Medicare Part A or B), not your pharmacy benefit.

Best Discount Options for Topical Fluorouracil

1. GoodRx

GoodRx is one of the most widely used prescription discount tools in the US. For generic fluorouracil 5% cream, GoodRx can bring the price to as low as $29.40 — a savings of up to 86% off the retail price. To use GoodRx: search for your medication on GoodRx.com, select your pharmacy, and show the coupon or barcode when filling your prescription. Note that you cannot combine GoodRx with Medicare.

2. SingleCare

SingleCare offers competitive pricing on fluorouracil cream. With a SingleCare savings card, generic fluorouracil 5% cream (40g tube) drops to approximately $33.71. The card is accepted at most major pharmacies including Walgreens, CVS, Walmart, Kroger, and Safeway. SingleCare can be used whether or not you have insurance.

3. Insurance Coverage

Most commercial insurance plans, Medicare, and Medicaid cover generic fluorouracil cream with an appropriate diagnosis (actinic keratosis or superficial BCC). Topical fluorouracil is typically placed at Tier 1 or Tier 2 on most formularies, meaning low or no copay. If your plan requires prior authorization, your dermatologist can submit clinical documentation to support approval.

For IV fluorouracil used in cancer treatment, Medicare Part A covers it during a hospital stay and Part B covers it when administered in an outpatient clinic or physician's office. Under Part B, Medicare pays 80% of the approved amount after you meet your deductible; a Medigap supplement can cover the remaining 20%.

4. Patient Assistance Programs (PAPs)

For patients who are uninsured or underinsured, pharmaceutical patient assistance programs can provide fluorouracil at little or no cost. Resources to check include:

NeedyMeds.org: Searchable database of PAPs and drug discount programs.

RxAssist.org: Another comprehensive resource for finding manufacturer and nonprofit assistance programs.

Cancer care nonprofits: Organizations like CancerCare, Cancer Fund of America, and the Patient Advocate Foundation offer financial assistance for cancer medications.

5. Use a 90-Day Supply When Possible

For ongoing use of topical fluorouracil (multiple treatment cycles for recurring AK, for example), a 90-day supply through your insurance's mail-order pharmacy can reduce your per-dose cost significantly. Many plans require mail-order for maintenance medications after the initial fill.

Finding the Drug First — Then Saving on It

Of course, saving money doesn't matter if you can't find the medication in the first place. With fluorouracil in ongoing shortage, start by locating a pharmacy that has it in stock. medfinder can help — we call pharmacies near you to find which ones can fill your prescription. See also our guide on how to find fluorouracil in stock near you.