Lemongrass, also called citronella, is a tall, stalky plant. It has a fresh, lemony aroma and a citrus flavor. It’s a common ingredient in Thai cooking and bug repellent. Lemongrass essential oil is used in aromatherapy to freshen the air, reduce stress, and uplift the mood. Lemongrass is also used as a folk remedy to promote sleep, relieve pain, and boost immunity. One of the most popular ways to enjoy lemongrass is in tea. Keep reading to learn how drinking lemongrass tea may help deliver these potential health benefits. Lemongrass tea may help treat oral infections and cavities, thanks to its antimicrobial properties. Inflammation is thought to play a role in many conditions, including heart disease and stroke. According to the Memorial Sloan Kettering Cancer Center, two of the main compounds in lemongrass, citral and geranial, are thought to be responsible for its anti-inflammatory benefits.