Ethnopharmacological Evaluation of Breu Essential Oils From Protium Species Administered by Inhalation

January 24, 2026

This study adds to the growing body of evidence for inhalation therapy (similar to the Lavender study, PMID: 22517298) as a viable route for treating neurological pain. It highlights "Breu" as a potential natural alternative for migraine management that does not carry the sedative side effects common in other treatments.

PMID: 29259642 refers to a study titled "Ethnopharmacological Evaluation of Breu Essential Oils From Protium Species Administered by Inhalation," published in Evidence-Based Complementary and Alternative Medicine in 2017.

This study investigates the traditional Amazonian use of Breu (an aromatic resin, is an aromatic oleoresin produced by trees of the Burseraceae family, the same botanical family as Frankincense, Myrrh, and Palo Santo) for treating headaches and migraines.

Key Details of the Study

The research evaluated the chemical composition and the pain-relieving (antinociceptive) and sedative effects of essential oils extracted from "Breu" resin when administered via inhalation.

Methodology: Researchers tested five different formulations (A–E) of Breu essential oils on mice. The oils were administered via nebulization in an inhalation chamber for 20 minutes to mimic the traditional practice of inhaling the smoke from the burning resin.
Results: Pain Relief: Several formulations showed significant antinociceptive (pain-blocking) and anti-inflammatory activity. Specifically, "Formulation E" inhibited pain responses by up to 60.2% in inflammatory tests.
No Sedation: Unlike many pharmacological painkillers, none of the formulations produced sedative effects or impaired motor coordination.
Chemical Stability: The study confirmed that the process of nebulization effectively delivered the active chemical compounds (primarily monoterpenes) without altering their composition.
Conclusion: The study supports the traditional use of Breu resin for headaches, concluding that inhalation of its essential oils provides significant pain relief and anti-inflammatory benefits without causing drowsiness.