Synopsis

Source of validity: Traditional
Rating (out of 5): 2

Ajuga, particularly Ajuga reptans (commonly known as Bugleweed), has a history of traditional use in herbal medicine for supporting thyroid function, especially in cases of mild hyperthyroidism (overactive thyroid). Historical records, primarily from European herbal traditions, describe Bugleweed as being used to help manage symptoms such as palpitations and nervousness associated with thyroid overactivity. The plant is thought to exert its effects by mildly inhibiting the excess production of thyroid hormones and reducing the peripheral conversion of thyroxine (T4) to the more active triiodothyronine (T3).

Scientific validation, however, is limited. A small number of animal studies and in vitro experiments suggest that certain compounds in Ajuga, such as lithospermic acid, may have a suppressive effect on thyroid-stimulating hormones. Despite these findings, there is a lack of robust clinical trials in humans to confirm efficacy or safety for thyroid support. Therefore, while Ajuga's reputation as a thyroid-supportive herb is rooted in tradition, modern scientific evidence is insufficient to fully endorse its use for this purpose. Individuals with thyroid disorders should consult healthcare professionals before using Ajuga as a supplement.

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