Your source of evidence-based information, facilitating best practice in medicines management

Welsh Medicines Advice Service

WMAS is a network of highly experienced individuals working closely together as an integrated team providing medicines advice and information for NHS Wales, and as individual teams within each local health board, supporting local healthcare

professionals and their patients.

WMAS is proud to collaborate with pharmacy professionals across the UK as part of the UKMi network.

Read the latest guidance from WMAS


The WMAS Cardiff centre hosts the UK Porphyria Medicines Information Service (UKPMIS) – a specialist advisory service on the safe use of drugs in porphyria for patients and healthcare professionals in the UK.

For healthcare professionals

WMAS produces medicines-related guidance to support healthcare professionals across NHS Wales.

This includes resources to support the Clinical Community Pharmacy Service and practical information on biosimilars and generic equivalents.

National Antiviral Service

The National Antiviral Service Cymru (NAVS) is co-ordinating the supply of treatments for COVID‑19 for the most vulnerable individuals across Wales who have not been admitted to hospital. 

NAVS is hosted within the WMAS Cardiff Centre

Change history

29 Mar 23

COVID vaccine allergy service links removed. Link to patient information pages added.

25 Feb 23

New style home page published.