KEYTRUDA vs VALSTAR PRESERVATIVE FREE

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 22, 2026·How we rate

Possible drug interaction. KEYTRUDA and VALSTAR PRESERVATIVE FREE 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	KEYTRUDA	VALSTAR PRESERVATIVE FREE
Rating	70/100	New
Pharmacy pays	—	—
Type	RX	RX
Active ingredient	PEMBROLIZUMAB	VALRUBICIN
Manufacturer	Merck Sharp Dohme	Endo Operations
Dosage forms	Injectable	Solution
Drug class	Programmed Death Receptor-1 Blocking Antibody	—
Boxed warning	None	None
Treats	Malignant Mesothelioma, Biliary Tract Neoplasms, Urinary Bladder Neoplasms	Urinary Bladder Neoplasms

keytruda valstar preservative free

Rating

70/100

New

Pharmacy pays

—

Type

Active ingredient

PEMBROLIZUMAB

VALRUBICIN

Manufacturer

Merck Sharp Dohme

Endo Operations

Dosage forms

Injectable

Solution

Drug class

Programmed Death Receptor-1 Blocking Antibody

—

Boxed warning

None

Treats

Malignant Mesothelioma, Biliary Tract Neoplasms, Urinary Bladder Neoplasms

Urinary Bladder Neoplasms

Frequently asked questions

What is the difference between Keytruda and Valstar Preservative Free?

Keytruda contains Pembrolizumab, while Valstar Preservative Free contains Valrubicin — 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.