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HIERBA LUISA

Hierba Luisa 2
Hierba Luisa 2 2
Hierba Luisa 3

Botanical name:

Aloysia citrodora Paláu (also Aloysia citriodora, Lippia citriodora)

Alternative names:

Lemon verbena, cedrón, hierba luisa, verbena de Indias

Main indications:

  • lemon-scented digestive tea
  • rest and nerves, in folk use

THIS PLANT IS PART OF THE HOJAS DEL ESPÍRITU ANACONDA AND TAPIR VERDE HERBAL FORMULAS.

Short characteristics:

Hierba luisa, on this page, is Aloysia citrodora — lemon verbena, cedrón. A South American Verbenaceae shrub with a lemon-oil leaf. It is not lemongrass (Cymbopogon citratus), a tropical grass. Shops mix the names; the plants do not.

People drink the leaf for digestion and for a calmer evening. That is tea-plant use. It is not an Amazonian endemic, not a fever drug, and not a treatment for asthma, insomnia as a diagnosis, or infection.

The usual way of use:

Infusion of dried leaf, 5–10 minutes, evening or after food. Do not confuse the bottle with lemongrass oil. Essential oil is a concentrated fragrance product, not a cup of tea, and not something to swallow by the dropper as a “cleanse.”

Composition

The leaf smells of citral because the oil is rich in geranial and neral, often with limonene. The non-volatile fraction that reviews keep returning to is verbascoside (acteoside) and related phenylethanoid glycosides, plus flavonoids. That is lemon-verbena chemistry. Lemongrass is a different oil in a different family.

  • Citral (geranial + neral) and limonene: the lemon scent of the leaf oil.
  • Verbascoside: the phenylethanoid most often quantified in extracts.
  • Not Cymbopogon: if the packet says hierba luisa but the plant is a grass, you bought lemongrass.

Traditional Use

Spanish colonial and South American household use is a lemon tea for the stomach and for rest. The plant is grown far beyond its South American origin. In the Andes and on the coast you will meet “cedrón” as a table tea. That is not ayahuasca, and it is not a jungle dieta plant.

  • Digestive tea: after meals, for crampy or heavy stomachs in folk talk.
  • Evening tea: nerves and sleep as household language, not as a hypnotic drug.

Precautions and Possible Interactions with Medicines

Tea is widely used as a food flavor. The essential oil is stronger stuff.

  • Citral allergy and fragrance sensitization: known for concentrated oil; less of an issue in a cup of leaf.
  • Kidney disease: some European monographs have urged caution with long, strong use. There is no large modern safety trial.
  • Sedatives: a calming tea is still a CNS-active habit if you stack it with real sedatives. Use common sense.
  • Pregnancy: food-tea amounts only; skip the oil.

Available Scientific Studies

Two papers on the right species. If a citation talks about Cymbopogon, it is the wrong plant.

  • “Aloysia citrodora Paláu (Lemon verbena): A review of phytochemistry and pharmacology”
    Authors: Bahramsoltani R, Rostamiasrabadi P, Shahpiri Z, Marques AM, Rahimi R, Farzaei MH (2018)
    Overview: Journal of Ethnopharmacology review of lemon verbena: citral-type oil, verbascoside, and preclinical pharmacology for antioxidant, antimicrobial, and anxiolytic-type findings. A species review, not a human insomnia trial.
    Link: https://pubmed.ncbi.nlm.nih.gov/29698776/

  • “Volatile Compounds and Biological Activity of the Essential Oil of Aloysia citrodora Paláu: Comparison of Hydrodistillation and Microwave-Assisted Hydrodistillation”
    Authors: Sprea RM, Fernandes LHM, Pires TCSP, Calhelha RC, Rodrigues PJ, Amaral JS (2023)
    Overview: Oil from the correct species: geranial and neral dominate; extraction method shifts the profile and in-vitro antioxidant, antibacterial, and cell-assay results. Essential-oil chemistry. Not a cup-of-tea clinical study.
    Link: https://pmc.ncbi.nlm.nih.gov/articles/PMC10254266/