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Chasteberry (Vitex agnus-castus) works at the level of the pituitary gland rather than directly at reproductive hormone receptors. Its primary mechanism: bioactive diterpenes bind to dopamine D2 receptors in the anterior pituitary, inhibiting prolactin secretion. Elevated prolactin suppresses FSH (follicle-stimulating hormone) and LH (luteinizing hormone), disrupting the hormonal signaling that governs ovulation and the luteal phase. By reducing excess prolactin, Vitex helps restore FSH/LH balance, supporting progesterone production in the second half of the cycle. This mechanism accounts for its clinical applications in PMS/PMDD, luteal phase defect, irregular cycles, and perimenopausal symptom management. Each Nature's Answer capsule delivers 400mg Vitex agnus-castus standardized extract, produced with their Advanced Botanical Fingerprint technology for batch-to-batch consistency.
Chasteberry works best with consistent long-term use — clinical studies show meaningful effects after 3+ months of daily supplementation. Consult a healthcare provider before use if pregnant, nursing, or taking hormonal medications.
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