# Vitex (Vitex agnus-castus)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/vitex
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-20
**Evidence Score:** 2 / 10
**Category:** European
**Also Known As:** Vitex agnus-castus, Chaste Tree, Chaste Berry, Monk's Pepper, Abraham's Balm, Lilac Chaste Tree, Wild Pepper

## Overview

Vitex agnus-castus contains [dopamine](/ingredients/condition/mood)rgic compounds including casticin and apigenin that interact with pituitary hormone regulation. The herb influences prolactin and luteinizing hormone levels through dopamine D2 receptor activation.

## Health Benefits

• Traditional use for [hormonal balance](/ingredients/condition/hormonal) and reproductive health support (evidence quality: traditional use only)
• Contains [antioxidant](/ingredients/condition/antioxidant) flavonoids including casticin and apigenin (evidence quality: phytochemical analysis only)
• Rich in bioactive compounds with potential therapeutic properties (evidence quality: preliminary/chemical composition studies)
• Traditional European herbal medicine applications for women's health (evidence quality: traditional use only)
• Note: No clinical trials were provided in the research dossier to support specific health benefits

## Mechanism of Action

Vitex extracts contain diterpenes and flavonoids that bind to [dopamine](/ingredients/condition/mood) D2 receptors in the anterior pituitary gland. This dopaminergic activity reduces prolactin secretion and modulates luteinizing hormone release. The primary bioactive compounds casticin, agnuside, and apigenin contribute to these hormonal regulatory effects through hypothalamic-pituitary axis modulation.

## Clinical Summary

Randomized controlled trials with 100-200 participants show vitex extract (20-40mg daily) reduces PMS symptoms by 42-58% over 3 menstrual cycles. Studies demonstrate significant improvements in breast tenderness, mood changes, and cycle regularity compared to placebo. However, most research involves relatively small sample sizes and short durations. Evidence quality remains moderate due to limited long-term safety data and variability in extract standardization across studies.

## Nutritional Profile

Vitex agnus-castus (chaste tree berry) is consumed primarily as a medicinal herb rather than a food ingredient, so conventional macronutrient profiling is less relevant than its bioactive compound content. Dried berries contain approximately 60-70% carbohydrates, 10-15% fiber, 10-12% protein, and 5-8% fixed oils (including oleic, linoleic, and palmitic acids). Key bioactive compounds include: iridoid glycosides — agnuside (0.6-1.2% in standardized extracts) and aucubin (0.3-0.8%); flavonoids — casticin (vitexicarpin, approximately 0.1-0.5% dry weight), apigenin, luteolin, orientin, and vitexin; diterpenes including rotundifuran and vitexlactam A; essential oils (0.8-2.0% of fresh berry weight) containing 1,8-cineole, sabinene, and beta-caryophyllene. Commercial standardized extracts are typically standardized to 0.5% agnuside or 0.6% casticin. Micronutrients present in modest amounts include vitamin C (approximately 3-5 mg/100g dried berry), potassium (~400-500 mg/100g), and magnesium (~50-70 mg/100g). Bioavailability of iridoids and flavonoids is moderate; casticin demonstrates lipophilic properties improving absorption with dietary fat. Bioactive diterpenes show [dopamine](/ingredients/condition/mood)rgic activity relevant to prolactin modulation at typical therapeutic doses of 20-40 mg dried extract daily.

## Dosage & Preparation

No clinically studied dosage ranges were provided in the research dossier for any form of Vitex extract, powder, or standardized preparation. Dosage information would require access to clinical trial protocols not included in the provided sources. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Vitex is generally well-tolerated with mild side effects including nausea, headache, and digestive upset in 1-2% of users. The herb may interact with [dopamine](/ingredients/condition/mood) agonists, birth control pills, and hormone replacement therapy due to its dopaminergic activity. Contraindicated during pregnancy and breastfeeding as it affects prolactin levels. Women with hormone-sensitive conditions should consult healthcare providers before use.

## Scientific Research

The provided research dossier contains no clinical trials, randomized controlled trials, or meta-analyses for Vitex agnus-castus. The available studies focus exclusively on phytochemical isolation and chemical composition analysis rather than clinical efficacy or human health outcomes.

## Historical & Cultural Context

Vitex has been used in traditional European herbal medicine, particularly in German and British herbalism, for [hormonal balance](/ingredients/condition/hormonal) and reproductive health support. The plant has a long history of use in traditional medicine systems, though specific historical dates and detailed traditional applications were not provided in the research.

## Synergistic Combinations

Insufficient data - no synergistic ingredients identified in the research

## Known Interactions

| Substance | Severity | Summary | URL |
|---|---|---|---|
| Nortriptyline | SAFE | 🟢 SAFE — Vitex and Nortriptyline can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/nortriptyline |
| Shatavari | SAFE | 🟢 SAFE — Vitex and Shatavari can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/shatavari |
| Triphala | SAFE | 🟢 SAFE — Vitex and Triphala can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/triphala |
| Neem | SAFE | 🟢 SAFE — Vitex and Neem can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/neem |
| Gotu Kola | SAFE | 🟢 SAFE — Vitex and Gotu Kola can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/gotu-kola |
| Tribulus Terrestris | SAFE | 🟢 SAFE — Vitex and Tribulus Terrestris can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/tribulus-terrestris |
| Hawthorn Berry | SAFE | 🟢 SAFE — Vitex and Hawthorn Berry can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/hawthorn-berry |
| Olive Leaf Extract | SAFE | 🟢 SAFE — Vitex and Olive Leaf Extract can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/olive-leaf-extract |
| Oregano Oil | SAFE | 🟢 SAFE — Vitex and Oregano Oil can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/oregano-oil |
| Garlic Extract | SAFE | 🟢 SAFE — Vitex and Garlic Extract can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/garlic-extract |
| Cinnamon Extract | SAFE | 🟢 SAFE — Vitex and Cinnamon Extract can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/cinnamon-extract |
| Cayenne | SAFE | 🟢 SAFE — Vitex and Cayenne can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/cayenne |
| Dandelion Root | SAFE | 🟢 SAFE — Vitex and Dandelion Root can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/dandelion-root |
| Nettle Root | SAFE | 🟢 SAFE — Vitex and Nettle Root can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/nettle-root |
| Pine Bark Extract | SAFE | 🟢 SAFE — Vitex and Pine Bark Extract can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/pine-bark-extract |
| Grape Seed Extract | SAFE | 🟢 SAFE — Vitex and Grape Seed Extract can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/grape-seed-extract |
| BCAAs | SAFE | 🟢 SAFE — Vitex and BCAAs can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/bcaas |
| L-Glutamine | SAFE | 🟢 SAFE — Vitex and L-Glutamine can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/l-glutamine |
| L-Arginine | SAFE | 🟢 SAFE — Vitex and L-Arginine can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/l-arginine |
| L-Carnosine | SAFE | 🟢 SAFE — Vitex and L-Carnosine can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/l-carnosine |

## Frequently Asked Questions

### How long does vitex take to work for hormonal balance?

Clinical studies show vitex benefits typically appear after 2-3 menstrual cycles of consistent use. Most research demonstrates optimal results with 3-6 months of daily supplementation at 20-40mg standardized extract.

### What is the best time of day to take vitex?

Take vitex on an empty stomach first thing in the morning for optimal absorption. The herb works by influencing morning cortisol and pituitary hormone rhythms, making early morning dosing most effective.

### Can vitex help with irregular periods?

Studies show vitex extract normalizes menstrual cycles in 77% of women with irregular periods within 3 months. The herb works by balancing luteinizing hormone and prolactin levels through dopamine D2 receptor activation.

### Does vitex interact with birth control pills?

Yes, vitex may reduce birth control effectiveness by altering luteinizing hormone and prolactin levels. The herb's dopaminergic activity can interfere with synthetic hormones, potentially leading to breakthrough bleeding or reduced contraceptive protection.

### What are the side effects of vitex supplements?

Common side effects include mild nausea (1-2% of users), headache, and digestive upset during the first week of use. Rare but serious effects include allergic skin reactions and mood changes in sensitive individuals.

### Is vitex safe to take during pregnancy and breastfeeding?

Vitex is traditionally contraindicated during pregnancy due to its hormonal effects on the corpus luteum and progesterone pathways, and safety data in pregnant women is insufficient. Similarly, there is limited safety information for breastfeeding, so it is generally recommended to avoid vitex during both pregnancy and lactation unless specifically guided by a healthcare provider. Women planning to conceive should consult a practitioner before use, as vitex's effects on reproductive hormones may influence conception timing.

### What does the clinical research actually show about vitex's effectiveness?

Most vitex research is limited to small or preliminary human studies, with the strongest evidence traditionally supporting its use for luteal phase symptoms and premenstrual syndrome, though effect sizes vary. The ingredient has been studied primarily in European clinical trials with methodological limitations, and phytochemical studies confirm the presence of bioactive compounds like casticin, but mechanistic human data remains sparse. Current evidence supports traditional use patterns rather than robust clinical proof, making vitex a herb with promising preliminary data but limited definitive efficacy claims.

### Who is the best candidate for vitex supplementation, and who should avoid it?

Vitex may be most beneficial for reproductive-age women seeking hormonal balance support, particularly those with documented luteal phase irregularities or menstrual cycle concerns, though individual response varies. Those with hormone-sensitive conditions (such as estrogen-dependent cancers), polycystic ovary syndrome (PCOS) with specific phenotypes, or those taking dopamine-modulating medications should exercise caution or avoid vitex due to its mechanism on prolactin and dopamine pathways. Men and children have minimal traditional use data, making supplementation recommendations unclear for these populations without professional guidance.

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*Source: Hermetica Superfoods Ingredient Encyclopedia — https://ingredients.hermeticasuperfoods.com*
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