Research findings
Contradicting effects
Recommended dosages
Raspberry leaf is a traditional herb that has been used for centuries by indigenous cultures for medicinal purposes. However, it was not until the 1940's that western medicine recognised its possible use as a uterine tonic for childbirth. It is now estimated that up to 20% of pregnant women will take some form of raspberry leaf extract (as a tea, tablet or tincture) during their pregnancy or after the birth of their baby.
The botanical name for the cultivated variety of raspberry leaf is 'Rubus idaeus'. However, there is also the more potent wild variety called 'Rosaceae strigosus'. Other common names are 'red raspberry', 'bramble' and 'hindberry'. Raspberry leaf contains high concentrations of the alkaloid 'fragarine' (also called framamine) and flavonoids, which are believed to strengthen, tone and relax the uterus and pelvic muscles. Raspberry leaf also contains calcium, iron, zinc, phosphorus, potassium, manganese and magnesium and vitamins A, B (1 and 3), C and E. It is therefore regarded as a nutritive tonic (as well as a 'yin tonic'). The tannin in raspberry leaf is believed to be beneficial for treating diarrhoea and dysentery (although excess tannin can cause constipation). The organic citric and malic acids are mild astringents, aimed at helping to cleanse and heal wounds.
NOTE: Raspberry leaf may be prescribed by herbalists, naturopaths and maternity caregivers for a variety of reasons in many forms, doses and concentrations. However, its safe use during pregnancy remains unclear. At present, there is very little (or no) research to support the many benefits claimed by taking raspberry leaf.
The claimed benefits of raspberry leaf include: