I have heavy periods, so I bought Red Raspberry Leaf Tea and had been drinking it for a couple weeks to ease my upcoming period. But, my period ended up heavier and clottier than I had ever had before. I read that this can happen because the rrl causes contractions to tone the uterus, and the contractions flush out the blood faster. Scared the heck out of me! Took Slow Flow to chill it back out.