supplementation
noun [ U ] medical specialized uk/sʌp.lɪ.menˈteɪ.ʃən/ us/ˌsʌp.lə.menˈteɪ.ʃən/
（含有病人所需物质的药或饮品）补剂
pills or drinks containing substances people usually get from food that are given to patients who do not weigh enough or who are not able to take in enough of these substances in food
calcium supplementation 补钙剂
Folic acid supplementation is used as treatment for elevated homocysteine levels. 叶酸补剂是用来治疗同型半胱氨酸水平过高的。