Agnus Castus for Fertility Support

Research suggests that Vitex agnus-castus may influence reproductive hormones through a proposed mechanism involving dopamine receptor activity in the pituitary gland, which could have relevance for fertility-related conditions such as elevated prolactin levels. The available human-focused evidence consists primarily of small, inconsistent studies reviewed in a 2023 narrative review, which found only preliminary support for its use in mild hyperprolactinaemia and concluded that larger, well-controlled clinical trials are needed before firm conclusions can be drawn. Supporting context comes from an observational study of wild chimpanzees consuming a related Vitex species, which recorded notable rises in progesterone levels, suggesting that Vitex plants can measurably affect the endocrine system in primates, though whether such effects are beneficial or harmful to fertility remains unclear. One of the three linked studies examined insect pest biology rather than human or primate fertility and contributes little to understanding the herb's effects in people, underscoring that the overall evidence base remains limited and that readers should consult qualified healthcare providers before drawing personal conclusions.