How to Save Money on Mephyton (Phytonadione) in 2026: Coupons, Discounts, and Patient Assistance

Mephyton (phytonadione) is a synthetic vitamin K1 medication—and for something that sounds like a basic vitamin, the retail price without insurance can be surprisingly steep. The good news is that with the right tools, most patients can bring that cost down substantially.

Here's everything you need to know about the real cost of phytonadione in 2026 and how to pay less.

What Does Phytonadione (Mephyton) Cost Without Insurance?

The retail cash price for generic phytonadione 5 mg tablets varies by pharmacy but typically ranges from $67 to $80 for a 30-tablet supply in 2026. Keep in mind that the brand-name Mephyton is no longer available—you will be purchasing the generic version.

Injectable phytonadione (for clinical use) costs significantly more—$38 to $213 or more depending on the formulation and packaging—but this is typically handled through a hospital or clinic, not an outpatient pharmacy.

Option 1: Use a GoodRx or SingleCare Coupon

Prescription discount programs like GoodRx and SingleCare are free to sign up for and can dramatically reduce the cost of phytonadione. Current 2026 pricing with these coupons:

GoodRx: Phytonadione 5 mg (30 tablets) available for as low as $21.21—approximately 73% off the retail price of ~$79.

SingleCare: Phytonadione 5 mg available for approximately $26.85—about 66% off the $78 retail price.

To use a coupon, simply search for "phytonadione" on GoodRx.com or SingleCare.com, select your pharmacy, and show the coupon (on your phone or printed) to the pharmacist. These coupons cannot be used together with insurance—it's one or the other, and the coupon is often cheaper.

Option 2: Use Your Insurance

Phytonadione is generally covered by most insurance plans as a generic medication. You can typically expect:

Commercial/employer insurance: Tier 1 or Tier 2 generic copay, usually $0-$15 per 30-day supply

Medicare Part D: Covered as a generic; check your plan's formulary for exact tier and copay. In 2026, Medicare Part D has a $2,100 annual out-of-pocket cap.

Medicaid: Generally covered with minimal or no copay

Tip: If your plan requires prior authorization, ask your prescriber to submit a PA request with clinical documentation. For most vitamin K deficiency and warfarin-management indications, PA approval is typically straightforward.

Option 3: Patient Assistance Programs

If you're uninsured or underinsured and cannot afford phytonadione even with discount coupons, patient assistance programs (PAPs) may be an option. These are programs run by pharmaceutical companies or independent organizations that provide medications at reduced or no cost based on income eligibility.

Organizations that can help connect patients to PAPs for Mephyton/phytonadione include:

The Rx Advocates: Connects patients with manufacturer-funded programs that provide ongoing medication access based on income. Requires prescription documentation and income verification.

Prescription Hope: A medication access service that works directly with pharmaceutical manufacturers to obtain medications at a set monthly price for qualifying patients.

Note: Eligibility for PAPs varies based on household income, insurance status, and other factors. Contact each organization directly to determine if you qualify.

Option 4: Mail-Order Pharmacy

If you take phytonadione on an ongoing basis, a mail-order pharmacy through your insurance plan can offer:

A 90-day supply at a lower per-dose cost than 30-day retail fills

Convenient home delivery, avoiding the need to locate it at a local pharmacy

Consistent supply from a single pharmacy that you know reliably stocks it

Savings Comparison Summary

No insurance, no coupon: ~$67-$80 for 30 tablets

With GoodRx: ~$21-$27 for 30 tablets (73% savings)

With insurance (Tier 1): $0-$15 for 30 tablets

With PAP: Income-based; may receive medication at minimal or no cost

Once you've sorted out cost savings, make sure you can actually find phytonadione at a nearby pharmacy. medfinder can help you locate which pharmacies near you have it in stock before you drive across town.

Read our guide on how to find Mephyton/phytonadione in stock near you for step-by-step tips.