Yunker

Yunker Kotei Eki, Yunkeru Kotei Eki(ユンケル黄帝液), is a health tonic similar to Lipovitan and produced by the Sato Pharmaceutical Corporation in Japan. It was first produced in 1967, and is widely available at drug stores throughout Japan. Yunker contains Chinese herbal ingredients and caffeine and is marketed to the Japanese workforce to combat fatigue.