ATHROMBIN vs ATHROMBIN-K

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated June 7, 2026·How we rate

Attribute	ATHROMBIN	ATHROMBIN-K
Rating	New	New
Pharmacy pays	~$2.57 /30	~$2.57 /30
Type	RX	RX
Active ingredient	WARFARIN POTASSIUM AND WARFARIN SODIUM	WARFARIN POTASSIUM AND WARFARIN SODIUM
Manufacturer	Pharm Res Assoc	Pharm Res Assoc
Dosage forms	Tablet	Tablet
Drug class	—	—
Boxed warning	None	None
Half-life	about 40 hours (the label's effective half-life; range 20 to 60 hours)	about 40 hours (the label's effective half-life; range 20 to 60 hours)

athrombin athrombin-k

Rating

New

Pharmacy pays

~$2.57 /30

Type

Active ingredient

WARFARIN POTASSIUM AND WARFARIN SODIUM

Manufacturer

Pharm Res Assoc

Dosage forms

Tablet

Drug class

—

Boxed warning

None

Half-life

about 40 hours (the label's effective half-life; range 20 to 60 hours)

Frequently asked questions

Which is cheaper, Athrombin or Athrombin-K?

Pharmacies pay about the same to acquire either one — roughly $2.57 for a 30-count supply, per the CMS NADAC survey. That is not what you will be charged: your price is set by your insurer and the pharmacy, not by what the drug cost them.

What is the difference between Athrombin and Athrombin-K?

Both Athrombin and Athrombin-K share the active ingredient Warfarin Potassium and Warfarin Sodium.

Ratings are based on FDA regulatory (recall-safety) data. This comparison is for general reference only — not medical advice. Always consult a licensed professional before choosing or switching a medication.