CUPRIMINE vs RIFATER

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated October 8, 2026·How we rate

Possible drug interaction. CUPRIMINE and RIFATER 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	CUPRIMINE	RIFATER
Rating	74/100	70/100
Pharmacy pays	—	~$96.88 /30
Type	RX	RX
Active ingredient	PENICILLAMINE	ISONIAZID AND PYRAZINAMIDE AND RIFAMPIN
Manufacturer	Valeant Pharm Intl	Sanofi Aventis US
Dosage forms	Capsule	Tablet
Drug class	Antirheumatic Agent	—
Boxed warning	Boxed warning	None
Treats	Rheumatoid Arthritis, Cystinuria, Hepatolenticular Degeneration	—

cuprimine rifater

Rating

74/100

70/100

Pharmacy pays

—

~$96.88 /30

Type

Active ingredient

PENICILLAMINE

ISONIAZID AND PYRAZINAMIDE AND RIFAMPIN

Manufacturer

Valeant Pharm Intl

Sanofi Aventis US

Dosage forms

Capsule

Tablet

Drug class

Antirheumatic Agent

—

Boxed warning

None

Treats

Rheumatoid Arthritis, Cystinuria, Hepatolenticular Degeneration

—

Frequently asked questions

Which is better-rated, Cuprimine or Rifater?

By our independent rating, Cuprimine scores higher — 3.7 vs 3.5 out of 5 for Rifater. Ratings are based on FDA regulatory (recall-safety) data.

What is the difference between Cuprimine and Rifater?

Cuprimine contains Penicillamine, while Rifater contains Isoniazid and Pyrazinamide and Rifampin — 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.