It has the effects of cooling, detoxifying and diuretic, lowering blood pressure and so on.

The calyx of roselle can also be used medicinally. It is sour in taste and cold in nature. It has the functions of clearing heat and relieving summer heat, diuresis and blood pressure reduction, beautifying and removing spots, detoxifying, and relieving alcoholism.

It has the effects of cooling, detoxifying and diuretic, lowering blood pressure and so on.