GOV.WALES uses cookies which are essential for the site to work. Non-essential cookies are also used to tailor and improve services. By continuing to use this site, you agree to our use of cookies.
Yn ei Strategaeth Fyd-eang, mae Sefydliad Iechyd y Byd yn galw ar Aelod-wladwriaethau i sefydlu system trethiant domestig i leihau defnydd niweidiol o alcohol.