Case Report
A Case of Anaphylaxis Induced by Synthetic Taurine in an Energy Drink
2020 Volume 3 Issue 2 Pages 313-317
Details
2020 Volume 3 Issue 2 Pages 313-317
A 38-year-old male patient developed urticaria and anaphylaxis after drinking 100 ml of a taurine-containing energy drink. Skin prick test demonstrated a positive reaction to the energy drink. Therefore, we ordered all components of the energy drink. Skin prick test was negative with these components. However, the skin scratch test had a positive reaction only with synthetic taurine. He was therefore diagnosed with anaphylaxis due to synthetic taurine. Taurine is one of the most abundant free amino acids in mammalian tissue. Both a natural type and synthetic type of taurine exist. Synthetic taurine is contained in several energy drinks. Natural taurine is present in food, especially shellfish, such as oysters, squid and other seafood. After this episode, he repeatedly ate some seafood, but no adverse reactions occurred. To our knowledge, there has been only one report of synthetic taurine in an energy drink inducing anaphylaxis in Korea. We report the first case of synthetic taurine-induced anaphylaxis in Japan.
（日本皮膚免疫アレルギー学会雑誌, 3（2）：313-317, 2020）
