Onosma bracteatum, commonly known as "Gaozaban," is a herb widely used in Unani and Ayurvedic traditional medicine. Its use to support or treat symptoms such as dizziness can be traced to classical Unani texts, where it is described as a "tonic for nerves and the brain" and is included in remedies aimed at calming the nervous system and alleviating symptoms like vertigo, anxiety, and weakness. The rationale for its use in dizziness is primarily based on these traditional concepts rather than modern pathophysiological understanding.

Scientific studies on Onosma bracteatum have largely focused on its anti-inflammatory, antioxidant, and hepatoprotective properties, with some research indicating mild anxiolytic (anti-anxiety) or neuroprotective effects in animal models. However, there are no robust clinical trials or pharmacological studies specifically evaluating its efficacy in treating dizziness or vertigo in humans. The connection between its traditional classification as a nervine tonic and actual relief of dizziness remains speculative and unproven by scientific standards.

In conclusion, while Onosma bracteatum is traditionally used for conditions that include dizziness, there is minimal direct scientific evidence to support its effectiveness for this specific indication. Its continued use for dizziness relies on historical precedent rather than validated clinical research.