Raspberry leaf, especially in tea form, has long been used in traditional herbal medicine and midwifery as an herbal tonic during pregnancy. Used in the correct way it is both a safe and effective medicine
Anecdotal reports have suggested that uterine contractions may be more coordinated during labor after ingestion of raspberry leaf during the last three months of pregnancy(1,2)
The first recorded therapeutic use of red raspberry leaf ( Rubus idaeus L., ssp. idaeus, Rosaceae) extract dates back to 1597.
I generally recommend taking raspberry leaf tea in the 3rd trimester when women reach 32 weeks during their pregnancy to allow their bodies to assimilate the benefits before giving birth.