Sylvant

Siltuximab · Recordati Rare Diseases, Inc.
PRESCRIPTION ONLY (USA)

Sylvant ingredients

Active ingredientStrength
Siltuximab100 mg/1, 400 mg/1

What Sylvant is used for

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

Sylvant is indicated for the treatment of adult patients with multicentric Castleman’s disease (MCD who are human immunodeficiency virus (HIV) negative and human herpesvirus-8 (HHV-8) negative.

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

Key facts

Brand
Sylvant
Generic name
Siltuximab
Made by
Recordati Rare Diseases, Inc.
Forms
Injection, Powder, For Solution
Given
Intravenous
Drug class
Interleukin-6 Antagonist
FDA approval
Biologic licence (BLA) BLA125496
On the US market since
2014

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 Sylvant?

Sylvant (Siltuximab) is a specialist medicine made by Recordati Rare Diseases, Inc., approved by the US FDA.

What are the ingredients of Sylvant?

Sylvant contains Siltuximab (100 mg/1, 400 mg/1).

Is Sylvant approved in Europe?

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

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.