CUPRIMINE vs XYWAV

Independent side-by-side comparison.

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

Possible drug interaction. CUPRIMINE and XYWAV 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	XYWAV
Rating	74/100	New
Pharmacy pays	—	—
Type	RX	RX
Active ingredient	PENICILLAMINE	CALCIUM OXYBATE AND MAGNESIUM OXYBATE AND POTASSIUM OXYBATE AND SODIUM OXYBATE
Manufacturer	Valeant Pharm Intl	Jazz
Dosage forms	Capsule	Solution
Drug class	Antirheumatic Agent	—
Boxed warning	Boxed warning	Boxed warning
Treats	Rheumatoid Arthritis, Cystinuria, Hepatolenticular Degeneration	—

cuprimine xywav

Rating

74/100

New

Pharmacy pays

—

Type

Active ingredient

PENICILLAMINE

CALCIUM OXYBATE AND MAGNESIUM OXYBATE AND POTASSIUM OXYBATE AND SODIUM OXYBATE

Manufacturer

Valeant Pharm Intl

Jazz

Dosage forms

Capsule

Solution

Drug class

Antirheumatic Agent

—

Boxed warning

Treats

Rheumatoid Arthritis, Cystinuria, Hepatolenticular Degeneration

—

Frequently asked questions

What is the difference between Cuprimine and Xywav?

Cuprimine contains Penicillamine, while Xywav contains Calcium Oxybate and Magnesium Oxybate and Potassium Oxybate and Sodium Oxybate — 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.