The efficacy and function of fresh longan is to tranquilize the mind and nourish blood, tonifying the heart and spleen.
The medicinal part of longan is the aril, which is warm in nature and sweet in taste, and belongs to the spleen and heart meridians. It is mainly used for treating blood deficiency and atrophy, palpitations and forgetfulness, and insomnia and dysphoria (violent heartbeat and panic attacks) and other discomforts. In addition, as longan meat can be used to tonify qi and blood, and tranquilize the mind. It can be used in conjunction with Chinese herbs such as Angelica sinensis and sour jujube nut.
However, patients with stagnant drinking (water stays in the body), phlegm-heat, and dampness-fullness (too much dampness causing fullness and discomfort in the spleen and stomach) should avoid consuming longan. Therefore, when taking fresh longan, it is recommended to ask a medical professional whether it is suitable for consumption and the exact dosage, etc., so as to avoid adverse effects on the organism.