Chaste tree, botanically known as Vitex agnus-castus, is a distinctive shrub from the mint family (Lamiaceae), which also includes valued plants such as basil, lavender and sage. Unlike the generally low‑growing relatives in this family, the chaste tree can reach an impressive height of up to four metres.
The plant is characterised by its fragrant, delicate inflorescences of small individual flowers and its aromatic leaves. Due to its long‑standing traditional use it is often referred to as the «chastetree» — a name reflecting its history in herbal medicine.
Particular attention is given to the small, drupe‑like seeds, about two to three millimetres in size, which resemble peppercorns and contain the valuable active constituents. These fruits are central to processing and are commonly used in supplements or herbal preparations, for example as teas, drops, capsules or tablets. As a spice they reveal a mild pungency with a fine bitter note that works well in marinades or dishes with legumes.
Chaste tree can naturally support the hormonal balance, since ripe fruits contain various constituents including essential oils, iridoid glycosides and diterpenes. These compounds can influence the interaction of certain neurotransmitters and help regulate the release of prolactin.
Prolactin is particularly elevated during breastfeeding to promote milk production and the growth of mammary glands. At the same time, elevated prolactin levels can alter the balance between progesterone and estradiol. Constituents of chaste tree may support a harmonious balance in the second half of the cycle, which can have a positive effect on cycle length and regularity. In this way chaste tree can be a useful adjunct to help the body during cycle‑related fluctuations.
Taking chaste tree may contribute to the harmonisation of hormonal regulation and supports a balanced experience of physical and emotional changes.
Furthermore, the plant can be a useful aid for cycle irregularities to help restore a natural rhythm. Both women and men may benefit, since chaste tree can positively influence hormonal balance.
During menopause chaste tree has been traditionally used to support wellbeing and to help alleviate accompanying symptoms such as hot flashes or sleep disturbances, thereby promoting quality of life during this phase.
The premenstrual syndrome is often associated with hormonal fluctuations. Elevated prolactin can affect the balance between oestrogen and progesterone. Constituents of chaste tree may help bring prolactin back into balance, which can positively affect how one feels during the cycle.
A regulated prolactin release can help reduce typical symptoms such as irritability, mood swings or physical tension, without claiming specific curative effects.
Chaste tree is often discussed in the context of hormonal imbalances and fertility. It can help regulate an excessively high prolactin level. Through this action the maturation of the egg and the preparation of the uterine lining can be supported, making the plant an interesting complementary measure.
In cases of hormonal imbalances such as progesterone deficiency or PCOS, chaste tree can be a meaningful supplement to accompany the cycle. Its action is mediated via natural regulatory hormones, not as a pharmaceutical drug.
Chaste tree is considered a gentle, natural companion for hormonal balance, although side effects can occasionally occur. Attention should be paid to allergic reactions such as skin rashes or itching, which may indicate an individual intolerance. Gastrointestinal complaints, including nausea or mild cramps, can also occur occasionally, indicating that the plant can act sensitively on the organism.
As chaste tree is involved in hormonal processes, interactions with certain medications or in the presence of hormonal disorders cannot be ruled out. Responsible use in consultation with knowledgeable professionals is advisable, particularly for pregnant and breastfeeding women, for whom use is not recommended.
Chaste tree is more than just a plant: it has traditionally been associated with hormonal balance and wellbeing. Thanks to its gentle action it can support a personal sense of equilibrium in daily life.


