What is in red raspberry leaf tea that helps regulate periods?

Many things: Abnormal periods are the body's way of saying things are not right within. The imbalance can have to do with inflammation, toxins.... The tea has various antioxidant and anti-inflammatory compounds (like quercetin). The tea is likely changing the inflammatory response in your body which is then changing the periods.

Nothing: There is nothing in red raspberry tea that would help to regulate periods.