Prevymis

letermovir · Merck Sharp & Dohme B.V.
ORPHAN AUTHORISED IN THE EU

What Prevymis is used for

Prevymis is indicated for prophylaxis of cytomegalovirus (CMV) reactivation and disease in adult and paediatric patients weighing at least 5 kg who are CMV-seropositive recipients [R+] of an allogeneic haematopoietic stem cell transplant (HSCT).Prevymis is indicated for prophylaxis of CMV disease in CMV-seronegative adult and paediatric patients weighing at least 40 kg who have received a kidney transplant from a CMV-seropositive donor [D+/R-].Prevymis is indicated for prophylaxis of cytomegalovirus (CMV) reactivation and disease in adult and paediatric patients weighing at least 15 kg who are CMV-seropositive recipients [R+] of an allogeneic haematopoietic stem cell transplant (HSCT). Consideration should be given to official guidance on the appropriate use of antiviral agents.

Approved use, as published by the European Medicines Agency.

What the labels mean

  • Orphan medicine: for a rare disease (affecting no more than 5 in 10,000 people in the EU).

Key facts

Brand
Prevymis
Active substance
letermovir
Disease area
Cytomegalovirus Infections
Medicine group
Antivirals for systemic use
ATC code
J05
Marketing authorisation holder
Merck Sharp & Dohme B.V.
Authorised in the EU since
2018

Official information

In the USA

Same active substance: Prevymis

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 Prevymis used for?

Prevymis is indicated for prophylaxis of cytomegalovirus (CMV) reactivation and disease in adult and paediatric patients weighing at least 5 kg who are CMV-seropositive recipients [R+] of an allogeneic haematopoietic stem cell transplant (HSCT).Prevymis is indicated for prophylaxis of CMV disease in CMV-seronegative adult and paediatric patients weighing at least 40 kg who have received a kidney transplant from a CMV-seropositive donor [D+/R-].Prevymis is indicated for prophylaxis of cytomegalovirus (CMV) reactivation and disease in adult and paediatric patients weighing at least 15 kg who are…

What is the active substance in Prevymis?

Prevymis contains letermovir.

Who makes Prevymis?

The EU marketing authorisation holder is Merck Sharp & Dohme B.V..

Is Prevymis an orphan medicine?

Yes. Prevymis is designated an orphan medicine in the EU, for a rare disease (Cytomegalovirus Infections).

Source: European Medicines Agency medicines data (ema.europa.eu), reproduced with acknowledgement of the source. Page made 5 November 2026 by Satya Babu.

← All specialty medicines, EU

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.