Chaste Tree Berry
A popular herb for female reproductive health, particularly for PMS and menstrual irregularities.
Also known as: Vitex agnus-castus • Monk's Pepper
Overview
Chaste tree berry, also known as Vitex agnus-castus, is a plant native to the Mediterranean and Asia. The fruit and seed are used to make medicine. Chaste tree berry has a long history of use for a variety of female reproductive health issues. It is believed to work by affecting levels of several hormones, including prolactin and progesterone. By lowering prolactin levels, chaste tree berry may help rebalance other hormones, which can lead to improvements in menstrual cycle regularity and symptoms of premenstrual syndrome (PMS). It is also used for symptoms of menopause, female infertility, and other conditions.
Key Benefits
Reduces PMS Symptoms
Chaste tree berry is widely used to alleviate symptoms of PMS, including breast tenderness, irritability, and mood swings.
Supports Menstrual Regularity
By balancing hormones, chaste tree berry can help regulate the menstrual cycle, making it more predictable.
May Improve Fertility
For some women, chaste tree berry may help improve fertility by promoting regular ovulation.
Dosage & How to Take
The most common dosage is 20-40 mg of a standardized extract once daily in the morning.
| Purpose | Dose | Notes |
|---|---|---|
| PMS | 20-40 mg daily | Taken throughout the menstrual cycle. |
| Menstrual Irregularities | 20-40 mg daily | May take several months to see results. |
Best Time to Take
Once daily in the morning is recommended.
With or Without Food
Can be taken with or without food.
Forms & Bioavailability
| Form | Absorption | Best For | Notes |
|---|---|---|---|
| Standardized Extract (Capsules) | High | Consistent and reliable dosing for therapeutic effects | Look for extracts standardized to casticin. |
| Tincture | Medium | Flexible dosing | Dosage can be easily adjusted. |
Side Effects & Safety
Common
- Nausea
- Headache
- Upset stomach
Rare
- Acne
- Rash
Contraindications
- Hormone-sensitive cancers
- Use of hormonal contraceptives
Interactions
May decrease the effectiveness of birth control pills.
May interfere with medications for Parkinson's disease.
Scientific Research
Vitex agnus-castus extracts for female reproductive disorders
In premenstrual dysphoric disorder, one study reported Vitex to be equivalent to fluoxetine, while in the other, fluoxetine outperformed Vitex.
Vitex agnus-castus in premenstrual syndrome: A meta-analysis of ...
The meta-analysis of the three clinical trials demonstrated the superiority of VAC over placebo in the treatment of PMS.
Food Sources
Frequently Asked Questions
Medical Disclaimer
This content is for educational and informational purposes only and is not intended as medical advice. Always consult with a qualified healthcare professional before starting any supplement regimen, especially if you have pre-existing health conditions or are taking medications. The statements on this page have not been evaluated by the Food and Drug Administration.