It is intended to find novel pharmaceutical use of sphingomyelin and to provide preventive or therapeutic agents for various diseases as well as a food and drink product and feed comprising any of these agents. The present invention provides a pharmaceutical agent which contains sphingomyelin as an active ingredient and is any of the following agents: 1) a sialomucin secretion promoter, 2) an agent for preventing drunken sickness (hangover), 3) an antiallergic agent, 4) an antioxidant, 5) an agent for defending against infection, 6) a hair growth agent, 7) a therapeutic agent for demyelinating disease, 8) an anti-pigmentation agent, 9) an anti-inflammatory agent, and 10) an agent for improving learning ability. The present invention also provides a food and drink product or feed, characterized by comprising the agent. It is preferred that the sphingomyelin should be derived from milk.스핑고미엘린의 신규한 의약 용도를 발견하여, 다양한 질환의 예방제 또는 치료제 및 이들 제를 배합한 음식품 및 음료를 제공하는 것을 과제로 한다. 스핑고미엘린을 유효 성분으로 함유하고, 하기 중 어느 하나의 제인 것을 특징으로 하는 의약: 1)시알로뮤신의 분비 촉진제, 2)숙취 예방제, 3)항알러지제, 4)항산화제, 5)감염 방어제, 6)양모제, 7)탈수초성 질환 치료제, 8)항색소침착제, 9)항염증제 또는 10)학습능 향상제. 상기 제를 배합한 것을 특징으로 하는 음식품 또는 음료. 스핑고미엘린이 젖 유래인 것이 바람직하다.
