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Natural essential oils & oils

Estragole – A Natural Solution for Preventing Gastric Ulcers

01/08/2025 vipsen

Gastric ulcers are a common condition affecting millions of people each year, primarily caused by an imbalance between mucosal protective factors (such as mucus, prostaglandins, mucosal blood flow) and damaging factors (gastric acid, NSAIDs, oxidative stress, inflammatory responses).

While proton pump inhibitors (PPIs) and H2 blockers are the current main treatments, they carry risks of recurrence and long-term side effects. This has driven the search for safer, natural bioactive compounds, with Estragole – the main component of basil essential oil (Ocimum basilicum L.) – emerging as a promising solution.

Gastric Ulcers
Gastric Ulcers (source: internet)

Estragole – The Key Compound in Basil Essential Oil

Estragole, also known as Methyl Chavicol, is a phenylpropanoid compound that makes up a high proportion of Vietnamese basil essential oil (up to 78% depending on variety and growing region). It contributes to the herb’s distinctive aroma and exhibits multiple biological effects, including antioxidant, anti-inflammatory, immunomodulatory, and cytoprotective actions.

A study by Edvaldo Balbino Alves Júnior et al. (2020) demonstrated that Estragole protects the gastric mucosa in various experimental ulcer models, thanks to its multi-target mechanisms.

Read the full research article here:

https://www.sciencedirect.com/science/article/pii/S075333222030771X
(Estragole prevents gastric ulcers via cytoprotective, antioxidant and immunoregulatory mechanisms in animal models – Edvaldo Balbino Alves Júnior et al., Biomedicine & Pharmacotherapy, Vol.130 (110578), October 2020)

Four Key Mechanisms of Estragole in Preventing Gastric Ulcers

Research findings have identified four main mechanisms by which Estragole exerts its protective effects on the stomach:

1. Cytoprotective Mechanisms

  • Enhanced mucus secretion: Estragole stimulates epithelial cells in the stomach to produce more protective mucus, forming a barrier against acid and pepsin, thereby preventing lesion formation.
  • Preservation of sulfhydryl (SH) groups: These groups maintain protein structure and key protective enzymes. Inhibition of SH significantly reduces Estragole’s protective effect, confirming the involvement of this pathway.
  • Activation of endogenous prostaglandins (PGE2, PGI2): Estragole promotes prostaglandin synthesis, increasing mucosal blood flow, supporting cell regeneration, and accelerating healing.

2. Gastric Secretion Inhibition

  • In the pyloric ligation-induced ulcer model, Estragole significantly reduced ulcerative lesion index (ULI) compared to control groups.
  • Although it did not markedly alter pH or hydrogen ion concentration, Estragole reduced the total gastric juice volume, limiting acid exposure to the mucosal surface and lowering erosion risk.
  • This indirect antisecretory effect differs from PPIs, minimizing potential long-term side effects.

3. Antioxidant Mechanisms

  • Reduction of oxidative stress – a major factor in mucosal injury:
    • Increases Glutathione (GSH) and Glutathione Peroxidase (GPx) levels, which neutralize free radicals generated by alcohol, NSAIDs, or stress.
    • Decreases Malondialdehyde (MDA) and Myeloperoxidase (MPO), markers of lipid peroxidation and neutrophil infiltration.
  • This protects cell membranes and blood vessels surrounding ulcer sites, preventing tissue damage.

4. Immunoregulatory Mechanisms

  • Reduction of pro-inflammatory cytokines: Estragole lowers IL-1β and TNF-α levels, both directly linked to epithelial cell apoptosis and delayed ulcer healing.
  • Increase of IL-10, a natural anti-inflammatory cytokine, balancing immune responses and minimizing secondary tissue damage from excessive inflammation.
  • Reduction of iNOS expression, preventing excessive nitric oxide production that can harm gastric cells.
Vietnamese Basil plants
Vietnamese Basil plants

Potential Applications of Estragole from Basil Essential Oil

The study highlights Estragole as a promising natural compound for preventing and supporting the treatment of gastric ulcers through its combined actions: cell protection – gastric secretion inhibition – antioxidant – immune modulation. This finding reinforces the medical value of Vietnamese basil essential oil, not only in culinary and wellness uses but also in pharmaceutical research utilizing natural plant-based ingredients.

However, scientists recommend further clinical trials in humans to validate its efficacy and safety in high-dose or long-term applications.

VIPSEN’s Basil Essential Oil – Rich in Estragole

At VIPSEN, our basil essential oil is sourced from select cultivation areas in Vietnam, steam-distilled under strict GMP, HACCP, and ISO 22000 standards, ensuring a high and stable Estragole content.

Our product is ideal for applications in pharmaceuticals, nutraceuticals, functional foods, beverages, and health care products, offering a natural, safe, and scientifically supported solution.

Conclusion

The research by Edvaldo Balbino Alves Júnior et al. (2020) demonstrates that Estragole – the major active compound in basil essential oil – can prevent gastric ulcers via four distinct mechanisms:

  • Cytoprotection
  • Gastric secretion inhibition
  • Antioxidant action
  • Immune modulation

This opens up new possibilities for developing natural therapies for digestive health.

VIPSEN is proud to supply high-quality Vietnamese basil essential oil rich in Estragole, offering global partners a sustainable and scientifically backed raw material for innovations in health and wellness.

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