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CUPRIMINE vs LIPOSYN II 20%

Independent side-by-side comparison.

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

Possible drug interaction. CUPRIMINE and LIPOSYN II 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.

Rating

74/100
58/100

Pharmacy pays

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Type

RX
RX

Active ingredient

PENICILLAMINE
SAFFLOWER OIL AND SOYBEAN OIL

Dosage forms

Capsule
Injectable

Drug class

Antirheumatic Agent
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Boxed warning

Treats

Rheumatoid Arthritis, Cystinuria, Hepatolenticular Degeneration
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Frequently asked questions

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

By our independent rating, Cuprimine scores higher — 3.7 vs 2.9 out of 5 for Liposyn II 20%. Ratings are based on FDA regulatory (recall-safety) data.

What is the difference between Cuprimine and Liposyn II 20%?

Cuprimine contains Penicillamine, while Liposyn II 20% contains Safflower Oil and Soybean 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.