Based on Traditional Herbal Medicine, longan can be used to:

1. tonifies and augments the heart and spleen
2. nourishes the blood
3. calms the spirit.

Some indications that can be treated by this herb with specific dosage and formulation are Insomnia, palpitations, forgetfulness, and dizziness due to heart and spleen deficiency. It is commonly used for problems associated with overthinking or overwork (can be taken alone as a tea).

The pharmacological effect of longan is antibiotic.