ATHROMBIN-K vs CUPRIMINE

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated October 5, 2026·How we rate

Possible drug interaction. ATHROMBIN-K and CUPRIMINE are different prescription medicines. Combining or switching between them can cause interactions — talk to a pharmacist or prescriber before making changes. This page is not medical advice.

Attribute	ATHROMBIN-K	CUPRIMINE
Rating	New	74/100
Pharmacy pays	~$2.57 /30	—
Type	RX	RX
Active ingredient	WARFARIN POTASSIUM AND WARFARIN SODIUM	PENICILLAMINE
Manufacturer	Pharm Res Assoc	Valeant Pharm Intl
Dosage forms	Tablet	Capsule
Drug class	—	Antirheumatic Agent
Boxed warning	None	Boxed warning
Half-life	about 40 hours (the label's effective half-life; range 20 to 60 hours)	—
Treats	—	Rheumatoid Arthritis, Cystinuria, Hepatolenticular Degeneration

athrombin-k cuprimine

Rating

New

74/100

Pharmacy pays

~$2.57 /30

—

Type

Active ingredient

WARFARIN POTASSIUM AND WARFARIN SODIUM

PENICILLAMINE

Manufacturer

Pharm Res Assoc

Valeant Pharm Intl

Dosage forms

Tablet

Capsule

Drug class

—

Antirheumatic Agent

Boxed warning

None

Boxed warning

Half-life

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

—

Treats

—

Rheumatoid Arthritis, Cystinuria, Hepatolenticular Degeneration

Frequently asked questions

What is the difference between Athrombin-K and Cuprimine?

Athrombin-K contains Warfarin Potassium and Warfarin Sodium, while Cuprimine contains Penicillamine — they have different active ingredients.

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.