CUPRIMINE vs PHENERGAN VC

Independent side-by-side comparison.

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

Possible drug interaction. CUPRIMINE and PHENERGAN VC 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	PHENERGAN VC
Rating	74/100	72/100
Pharmacy pays	—	$8.59 /mL
Type	RX	RX
Active ingredient	PENICILLAMINE	PHENYLEPHRINE HYDROCHLORIDE AND PROMETHAZINE HYDROCHLORIDE
Manufacturer	Valeant Pharm Intl	Ani Pharms
Dosage forms	Capsule	Syrup
Drug class	Antirheumatic Agent	—
Boxed warning	Boxed warning	None
Half-life	—	about 9 to 16 hours
Treats	Rheumatoid Arthritis, Cystinuria, Hepatolenticular Degeneration	—

cuprimine phenergan vc

Rating

74/100

72/100

Pharmacy pays

—

$8.59 /mL

Type

Active ingredient

PENICILLAMINE

PHENYLEPHRINE HYDROCHLORIDE AND PROMETHAZINE HYDROCHLORIDE

Manufacturer

Valeant Pharm Intl

Ani Pharms

Dosage forms

Capsule

Syrup

Drug class

Antirheumatic Agent

—

Boxed warning

None

Half-life

—

about 9 to 16 hours

Treats

Rheumatoid Arthritis, Cystinuria, Hepatolenticular Degeneration

—

Frequently asked questions

Which is better-rated, Cuprimine or Phenergan Vc?

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

What is the difference between Cuprimine and Phenergan Vc?

Cuprimine contains Penicillamine, while Phenergan Vc contains Phenylephrine Hydrochloride and Promethazine Hydrochloride — 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.