Lemongrass (Cymbopogon): Traditional Use, Human Evidence & Safety

Lemongrass is familiar in teas, cooking, gardens, and household traditions. The first thing to know is that Cymbopogon is a genus with multiple species, so plant identity matters before we start talking about evidence.

Quick answer

Human research on lemongrass is limited. Many popular claims are based on traditional use, laboratory research, or animal studies rather than strong clinical trials.

What human evidence we have

An older controlled human study of Cymbopogon citratus tea found no clear hypnotic or anxiolytic effect compared with placebo. Short-term use in that study did not produce major clinical toxicity signals, but that does not prove long-term safety for concentrated extracts or every species.

Evidence strength

Norene’s Farmacy rating for most promoted health claims: TRADITIONAL USE / LIMITED HUMAN EVIDENCE.

Food and tea are not concentrated extracts

A culinary stalk, traditionally prepared tea, essential oil, and concentrated extract are different products. Essential oils are highly concentrated and should not be treated like ordinary tea.

Source

Leite JR, et al. Journal of Ethnopharmacology. Human study of Cymbopogon citratus tea. PubMed PMID 2429120.

Dr. Village Reports is educational journalism and product guidance, not medical advice.