Insufficient blood supply to the brain belongs to the category of “vertigo” in Chinese medicine. Gui Yuan is longan meat, belonging to the same source of medicine and food. Longan meat has a certain relief effect on vertigo caused by deficiency of blood and qi, but the efficacy of single Chinese medicine is limited, clinically it needs to be used in conjunction with other Chinese medicines after identification by a Chinese medicine practitioner. Longan meat has the effect of tonifying the heart and spleen, nourishing blood and tranquilizing the mind. It is used in treating over-thought, strain to the heart and spleen, palpitation and palpitations, insomnia and forgetfulness. Longan meat is not recommended for people with phlegm fire and dampness stagnation (water stays in the body). Patients with insufficient blood supply to the brain are advised to seek prompt medical attention from a specialized doctor. If you need to use Longan meat to treat diseases, you must use it under the guidance of a professional doctor.