If you have always had a bad spleen and stomach it is recommended that you do not drink it, if it is only recently the stomach and intestines are not good, you can drink it again after a while.
Also, there is a possibility of a taste problem. Because Leah's tea has added aspartame, which is what we usually see as Diet Sugar, it has a sweet flavor but a strong green tea bitter taste, so many people are not used to it when they first start drinking it.
See which one you are before deciding whether to keep drinking it in the future.