The oestrogen receptor sites in the breast are stimulated by low doses of the plant-based oestrogens or phytoestrogens, combined with other natural substances drawn from the ERDIC ingredients. The effects are similar to those experienced by women during puberty or pregnancy (without the associated effects).

The phytoestrogens mimic the effects of oestrogen when introduced into the human body and this helps stimulate the breast tissue growth. Phytoestrogens more closely match the body's own hormones yet have only 1/1000 the oestrogenic activity of synthetic or environmental oestrogen.