The active ingredients in Shatavari are saponins, which are a type of steroid molecule. Shatavari contains two main saponins, shatavarin-I, which is unique to Shatavari, and Protodioscin, which is also found in the male libido-enhancer Tribulus. These saponins are hormonally active, and have been demonstrated to increase follicle-stimulating hormone in women. This, in turn, causes an increased production of oestrogen, which stimulates the libido centre in the brain, and also softens and lubricates the pelvic organs. Shatavari may also be a mild testosterone-enhancing effect in women, which can stimulate libido.