Vyloy

Zolbetuximab · Astellas Pharma US, Inc.
CANCER MEDICINE · PRESCRIPTION ONLY (USA)

Vyloy ingredients

Active ingredientStrength
Zolbetuximab20 mg/mL

What Vyloy is used for

The FDA lists the approved uses on the official label (below). In the EU, zolbetuximab is approved as Vyloy for:

Vyloy, in combination with fluoropyrimidine- and platinum-containing chemotherapy, is indicated for the first line treatment of adult patients with locally advanced unresectable or metastatic HER2 negative gastric or gastro-oesophageal junction (GEJ) adenocarcinoma whose tumours are Claudin (CLDN) 18.2 positive (see section 4.2).

EU wording from the European Medicines Agency; US approved uses can differ.

Key facts

Brand
Vyloy
Generic name
Zolbetuximab
Made by
Astellas Pharma US, Inc.
Forms
Injection, Powder, For Suspension
Given
Intravenous
Drug class
Claudin 18.2-directed Cytolytic Antibody
FDA approval
Biologic licence (BLA) BLA761365
On the US market since
2024

Official information

Specialist medicine: started and supervised by a specialist doctor or hospital. This page is a plain-language summary of public official information, not medical advice; follow your doctor and the official product information.

Common questions

What is Vyloy?

Vyloy (Zolbetuximab) is a cancer medicine made by Astellas Pharma US, Inc., approved by the US FDA.

What are the ingredients of Vyloy?

Vyloy contains Zolbetuximab (20 mg/mL).

Is Vyloy approved in Europe?

The same active substance is approved in the EU as Vyloy.

From the FDA National Drug Code directory (open.fda.gov, public domain) and the European Medicines Agency medicines list. Page made 5 November 2026 by Satya Babu.

← All specialty medicines, USA

For information only, not medical advice. This page is a plain-language summary written from standard prescribing information and the public guides linked below. Brands sometimes change their formula, so always check the composition printed on the pack. Doses here are typical adult doses; yours may differ. Do not start, stop or change a medicine without your doctor or pharmacist, and keep all medicines away from children. In an emergency, call 112 (India) or your local emergency number.