Green tea can cause problems in certain people because it incorporates caffeine (two). People who have problems with migraines can take in green tea at times. That’s because green tea contains an amino acid called L-theanine, which assists to regulate blood sugar levels and slows the absorption of caffeine. https://drinkinggreenteaonanempty22211.techionblog.com/31041409/is-drinking-green-tea-on-empty-stomach-good-options