The ingredient of steroids was "Jamu Tea Black", which was sold as a health tea by "Kojuku" in Miyakojima-ku, Osaka City. A doctor who saw the results of a blood test on a teenage woman who had been taking the drug for about four months noticed an abnormality in her adrenal function and stopped taking it.
The National Consumer Affairs Center is requesting businesses to immediately stop selling the product and to seek medical attention if they drink it. "Dexamethasone" has the effect of suppressing inflammation, is an ingredient in pharmaceuticals used for rheumatism and atopic dermatitis.