The phrase "raspberry leaf" refers to a type of leaf from a raspberry plant. It is commonly used to make herbal tea or other natural remedies. Full definition
I want to start drinking red raspberry leaf tea as you suggest, when I asked my midwife she suggest I stay away from it until a couple weeks before my due date. (mamanatural.com)
Drinking a few cups of red raspberry leaf tea throughout days 1 through 7, has helped to keep my hormone levels balanced. (paleocajunlady.com)
I tried drinking raspberry leaf tea together with eating spicy meals for three days. (health-and-parenting.com)