Eurycoma longifolia Jack
Eurycoma longifolia Jack is a herb found in South-East Asia, belonging to the Simaroubaceae family. It has been widely used in traditional medicine. This plant is known natively as 'Tongkat Ali' or 'Pasak Bumi' in Malaysia and Indonesia, respectively. Eurycoma longifolia Jack was investigated for sexual motivation activity in adult, middle-aged male mice and in retired breeders, using the modified open field and the modified runway choice methods. Eurycoma Longifolia Jack root powder is a dietary supplement also known as Pasak Bumi and sometimes abbreviated as longjack.