Have just been looking at the using red raspberry leaf tea/capsules for labour and was searching the net and found this- RED RASPBERRY LEAVES (Rubus spp.) Brewed as a tea or as an infusion, raspberry is the best known, most widely used, and safest of all uterine and pregnancy tonic herbs. It contains fragrine, an alkaloid which gives tone to the muscles of the pelvic region, including the uterus itself. Most of the benefits ascribed to regular use of Raspberry tea through pregnancy are traced to the nourishing source of vitamins and minerals found in this plant and to the strengthening power of fragrine - an alkaloid which gives tone to the muscles of the pelvic region, including the uterus itself. Of special note are the rich concentration of vitamin C, the presence of vitamin E and the easily assimilated calcium and iron. Raspberry leaves also contain vitamins A and B complex and many minerals, including phosphorous and potassium. The benefits of drinking a raspberry leaf brew before and throughout pregnancy include: ~ Increasing fertility in both men and women. Raspberry leaf is an excellent fertility herb when combined with Red Clover. ~ Preventing miscarriage. Raspberry leaf tones the uterus and helps prevent miscarriage. Don't know if its of any use but thought i'd post incase anyone wants to reseaech it more.