Eurycoma longifolia, or tongkat ali, is a shrubby tree native to Southeast AsiaTrusted Source. The plant is indigenous to Malaysia, Indonesia, and Vietnam. Some species of the plant also grow in regions of Cambodia, Myanmar, and Thailand. Tongkat ali literally means “Ali’s walking stick,” which makes reference to its aphrodisiac effects. Some people say that the “stick” refers to the plant’s long, twisted roots that some groups harvest for their medicinal value. The same review concluded that E. longifolia is a promising herbal remedy for some conditions. However, there is insufficient evidence regarding its safety and efficacy. People also use the plant roots to stimulate appetite and increase strength and energy. Others use them as an antibiotic.
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