What are the Uses and Health Benefits of Coffee Senna (Cassia occidentalis)? What is Coffee Senna (Cassia occidentalis)? Herbs have been used in traditional systems of medicine and as pharmacopoeial drugs since ancient times. Herbs possess a variety of phytopharmaceuticals which play a vital role in agriculture, human health etc. Therefore, it is important to have sufficient knowledge about herbs not only because of their immense health benefits. Although in traditional medicine Cassia species are well known for its laxative