Synopsis

Source of validity: Traditional
Rating (out of 5): 1

The blackboard tree (Alstonia scholaris) has a long history of use in traditional medicine systems across Asia, particularly in Ayurveda and Traditional Chinese Medicine. In these traditions, various parts of the tree—including the bark, leaves, and latex—have been used to treat a range of ailments, such as respiratory conditions, fever, and, occasionally, neurological disorders including insomnia. The rationale for its use in insomnia is based primarily on anecdotal reports and traditional formulations, where the bark or extract is believed to have mild sedative or calming properties.

However, the scientific evidence supporting the use of Alstonia scholaris for insomnia is very limited. While a few laboratory studies have examined its phytochemical composition and reported some central nervous system activities (such as mild anxiolytic or antipyretic effects in animal models), there are no well-designed clinical trials that specifically demonstrate its efficacy for improving sleep or treating insomnia in humans. Most available research focuses on its antimicrobial, anti-inflammatory, or bronchodilatory effects rather than its impact on sleep. As a result, its use for insomnia remains primarily traditional, and the supporting evidence is weak (rated 1/5), relying on historical use rather than robust scientific validation.

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