Composition comprising at least components (i) to (iii): (i) choline in an amount of from 70 - 99 % by weight, (ii) one or more vitamins in an amount of from 0.5 - 25 % by weight, (iii) zinc in an amount of from 0.1 - 10 % by weight, wherein the total amount of choline, the one or more vitamins and zinc amounts to 100 % by weight.The composition may be used for protecting and maintaining liver function in a human, whose liver is subjected to alcohol.一組成物,包括至少成份(i)至成份(iii):(i)膽鹼,該膽鹼的重量百分比為70~99%,(ii)一或多種維生素,該一或多種維生素的重量百分比為0.5~25%,(iii)鋅,該鋅的重量百分比為0.1~10%,其中該膽鹼、該一或多種維生素以及該鋅的總重量百分比為100%。該組成物可以被使用以保護和維持人類的肝臟功能,其中人類的肝臟係受到酒精的影響。