Quick answer
Chasteberry is the dried fruit of the chaste tree, Vitex agnus-castus, a shrub native to the Mediterranean and western Asia. It has a long history in European herbal traditions and appears in women's supplements, including MAYN Inositol+, which pairs 4000mg myo-inositol with 40mg chasteberry per serve.
Botanical name
Vitex agnus-castus
Also called
Vitex, chaste tree berry, monk's pepper
Native to
Mediterranean and western Asia
Part used
The dried berries
Where does chasteberry come from?
The chaste tree is a flowering shrub with lilac-coloured flowers that grows in Mediterranean climates. Its small, peppercorn-like berries are dried and used to make extracts.
Why is it called "chasteberry"?
The name dates back to medieval Europe, where the berries were associated with monasteries. The "monk's pepper" nickname comes from the same history and from the berries' peppery appearance and taste.
Featured in this guide
MAYN Inositol+ Myo-Inositol 4000mg & Chasteberry 40mg Powder, 250g
Chasteberry in supplements
Chasteberry is usually sold as a dried extract, measured in milligrams. Products list the amount of extract per serve. Some combine it with other ingredients; for example, MAYN Inositol+ combines myo-inositol and chasteberry in one powder.
Who should check with a doctor first?
Speak with your doctor or pharmacist before taking chasteberry if you are pregnant, breastfeeding, trying to conceive, taking hormonal medicines (including contraceptives) or have a medical condition.
Frequently asked questions
Is chasteberry the same as vitex?
Yes. Chasteberry, vitex, chaste tree berry and monk's pepper all refer to Vitex agnus-castus.
What does chasteberry taste like?
The dried berries have a peppery, slightly bitter taste. In a powder blend with inositol, the taste is mild.
How much chasteberry is in MAYN Inositol+?
MAYN Inositol+ lists 40mg chasteberry alongside 4000mg myo-inositol per serve. Always check the current label.
Keep reading
This article is general information only and is not medical advice. Always read the label and follow the directions for use. Dietary supplements should not replace a balanced diet. If you are pregnant, breastfeeding, taking medication or have a medical condition, speak with your doctor or pharmacist before taking a new supplement.
