CUPRIMINE vs LIPOSYN 20%

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated October 9, 2026·How we rate

Possible drug interaction. CUPRIMINE and LIPOSYN 20% 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	LIPOSYN 20%
Rating	74/100	72/100
Pharmacy pays	—	—
Type	RX	RX
Active ingredient	PENICILLAMINE	SAFFLOWER OIL
Manufacturer	Valeant Pharm Intl	Abbott
Dosage forms	Capsule	Injectable
Drug class	Antirheumatic Agent	—
Boxed warning	Boxed warning	None
Treats	Rheumatoid Arthritis, Cystinuria, Hepatolenticular Degeneration	—

cuprimine liposyn 20%

Rating

74/100

72/100

Pharmacy pays

—

Type

Active ingredient

PENICILLAMINE

SAFFLOWER OIL

Manufacturer

Valeant Pharm Intl

Abbott

Dosage forms

Capsule

Injectable

Drug class

Antirheumatic Agent

—

Boxed warning

None

Treats

Rheumatoid Arthritis, Cystinuria, Hepatolenticular Degeneration

—

Frequently asked questions

Which is better-rated, Cuprimine or Liposyn 20%?

By our independent rating, Cuprimine scores higher — 3.7 vs 3.6 out of 5 for Liposyn 20%. Ratings are based on FDA regulatory (recall-safety) data.

What is the difference between Cuprimine and Liposyn 20%?

Cuprimine contains Penicillamine, while Liposyn 20% contains Safflower Oil — 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.