Costar Royal Jelly is a highly concentrated food source containing proteins, carbohydrates, vitamins and 10-HDA. It is the sole diet of the queen bee and provides her with superior life expectancy and increased fertility. Traditionally recognised for its ability to increase vitality, improve digestion and condition the skin, hair and nails. New benefits of taking Royal Jelly, such as improved liver function, relieving stress, lowering cholesterol,  anti-inflammatory and anti-bacterial properties, are also being discovered.