Vietnam’s Medicated Oil Tradition: Dầu Gió, Cajuput Oil, and the Wind-Illness Concept

Summary — Vietnam has one of Asia’s most distinctive topical-oil cultures. The category dầu gió (“wind oil”) reflects a Traditional Chinese Medicine-influenced view of trúng gió (wind-strike illness) and today covers menthol-camphor-methyl-salicylate blends like Eagle Brand (Dầu Gió Xanh Con Ó) alongside the Vietnamese-origin Huế cajuput oil (dầu tràm) used widely on infants. This article traces the historical, pharmacological, and regulatory story — and flags safety caveats that the consumer marketing frequently omits.

Independently written by the CompanyForge AI editorial team. Primary sources cited inline. License: CC BY 4.0.

1. The cultural frame: gió, trúng gió, and why oil is the first response

In Vietnamese folk medicine, gió (wind) is an etiological category inherited from Traditional Chinese Medicine’s 風 (fēng). A person who becomes suddenly ill — nausea, chills, headache, dizziness, fainting spells after temperature changes — is said to have been trúng gió (“wind-struck”). The culturally prescribed first response is not a pill but a topical intervention: rubbing a pungent, volatile oil on the temples, nape, sternum, and back, often combined with cạo gió (coin-rubbing, a form of dermabrasive scraping that produces red petechiae). The oil is believed to “expel the wind” through warming and aromatic action.

This framework — the illness concept driving the product category — is why Vietnam’s medicated-oil market is dominated not by anti-inflammatory patches (as in Japan) or joint-pain liniments (as in Hong Kong) but by strongly aromatic, multi-purpose inhalant-embrocations. A Vietnamese household will typically keep at least one dầu gió plus a jar of dầu tràm (cajuput oil) for infants.

The pharmacology that underlies the “wind-expelling” sensation is straightforward: menthol activates TRPM8 cold-sensing receptors, camphor activates TRPV1/TRPV3 warm receptors, and methyl salicylate penetrates to produce local counterirritation. The subjective cooling-then-warming is neurologically real even where the “wind” etiology is not.

2. Eagle Brand Medicated Oil (Dầu Gió Xanh Con Ó): the iconic imported classic

The green glass bottle with the eagle on the label is the single most recognized medicated oil in Vietnam and in the global Vietnamese diaspora. Despite its deep cultural embedding, it is not a Vietnamese-origin product.

Origin. The formulation was developed in 1935 by German chemist Wilhelm Hauffman for J. Lea & Co., a Singapore trading house owned by the Chinese merchant-philanthropist Tan Jim Lay. The brand entered Vietnam in the 1960s and rapidly became the default household oil across South Vietnam. After 1975, demand followed refugee migration, and today Eagle Brand Medicated Oil is manufactured by Borden Company (Pte) Ltd in Singapore with production reportedly exceeding 6 million bottles annually, distributed to the United States, Canada, Europe, and Australia. ¹

Composition (per Singapore HSA product listing). The green oil’s active ingredients are typically:

The characteristic green colour comes from plant-derived chlorophyll, not from the eucalyptus content — a point often confused in consumer discussion. ²

White (Aromatic) variant. Eagle Brand also sells a white-oil version without chlorophyll, with a slightly different aromatic profile (stronger camphor note), aimed at older users who prefer a less staining product.

Regulatory status. Eagle Brand is registered as a Chinese Proprietary Medicine (CPM) under Singapore’s Health Sciences Authority (HSA) and is imported into Vietnam under the Ministry of Health’s (Bộ Y Tế) traditional-medicine registration framework. ³

3. Dầu Tràm: Vietnam’s own herbal cornerstone

Where Eagle Brand is imported, dầu tràm is indigenous. Distilled from Melaleuca cajuputi (or M. leucadendra) — the cajuput tree — the oil has been produced in central Vietnam for centuries, with the city of Huế (former imperial capital) as the traditional heartland of production. Hue-origin dầu tràm carries a geographical reputation comparable to Champagne for sparkling wine.

Chemistry. Authentic cajuput oil is characterized by a high 1,8-cineole (eucalyptol) content, typically 40–60%, alongside α-terpineol, α-pinene, and limonene. ⁴ This is pharmacologically similar to — but distinct from — eucalyptus oil. Cajuput oil is listed in the European Pharmacopoeia (as Cajuputi aetheroleum) and has a separate monograph from eucalyptus.

Vietnamese infant use — and the safety gap. Dầu tràm occupies a unique position in Vietnamese parenting: it is routinely applied to newborns for warmth, colic (“đầy hơi”), mosquito bites, and respiratory congestion. Many Vietnamese-language parenting sites describe it as “safe from birth.” ^{5 6}

This claim requires careful qualification. International pediatric pharmacology consensus — including the American Academy of Pediatrics and European Medicines Agency (EMA) Committee on Herbal Medicinal Products — warns that 1,8-cineole and other terpenes can trigger laryngospasm, bronchospasm, and CNS toxicity in children under 2, particularly when applied near the nose or on broken skin. ⁷ The EMA explicitly states that products containing 1,8-cineole should not be applied to the face of children under 30 months.

The reconciliation: diluted dầu tràm applied to the trunk, back, or soles of older infants in a warm bath, with adult supervision, is reasonable and is the actual traditional practice. Concentrated oil applied under the nose of a newborn is not — and several Vietnamese pediatric sources (e.g., Vinmec’s clinical advisory) now echo this caution. ⁸

4. Cao Sao Vàng (Golden Star Balm): a Cold-War domestic icon

Cao Sao Vàng — “Golden Star Balm” — is the Vietnamese-manufactured camphor-menthol ointment in a small gold tin that was ubiquitous in socialist-era households from the 1970s through the 1990s. Produced historically by state pharmaceutical enterprises (today primarily by OPC Pharmaceutical JSC and Sao Vàng JSC), it became a minor cult item abroad — notably in the former Soviet bloc, where it was distributed as “Звёздочка” (Zvezdochka) and remains sold in Russia and Eastern Europe.

Composition. Camphor, menthol, peppermint oil, cajuput oil, eucalyptus oil, clove oil, cinnamon oil — a denser, more herbaceous profile than Tiger Balm, with notable clove and cinnamon notes.

Uses. Applied to temples for headache, to the chest for congestion, and to insect bites. The pharmacological profile is a standard camphor-menthol counterirritant and carries the same pediatric cautions: do not use under 2 years, avoid under the nose in any child, and keep out of reach (camphor ingestion is a well-documented pediatric poisoning cause — AAPCC data consistently rank camphor products among the most common pediatric topical ingestions). ⁹

5. Phật Linh, Trường Sơn, and the local brand landscape

Beyond the three flagships above, the Vietnamese market includes:

• Dầu Phật Linh — a camphor-menthol-methyl-salicylate oil associated with Buddhist monastic medicine traditions, produced by the Phật Linh pharmaceutical cooperative.
• Dầu Trường Sơn — named after the Trường Sơn mountain range, a domestic cajuput-and-peppermint blend.
• Dầu Khuynh Diệp Bác Sĩ Tín (“Doctor Tín’s Eucalyptus Oil”) — an older Saigon-era brand historically marketed for childhood colic; formulations vary.
• Dầu gió Kim — a lower-priced domestic analogue of Eagle Brand.

All of these register with Vietnam’s Ministry of Health under the Đăng ký thuốc cổ truyền (traditional-medicine registration) pathway, governed by the Pharmacy Law 2016 (Luật Dược 2016) and its implementing Circular 21/2018/TT-BYT.

6. Regulatory framework: Bộ Y Tế and the Vietnamese Pharmacopoeia

Vietnam’s drug regulation is centralized under the Drug Administration of Vietnam (DAV / Cục Quản lý Dược) within the Ministry of Health.

• Dược điển Việt Nam (Vietnamese Pharmacopoeia, 5th edition, 2018) contains monographs for the key medicated-oil constituents: menthol (Mentholum), camphor (Camphora), eucalyptus oil (Oleum Eucalypti), cajuput oil (Oleum Cajuputi), and methyl salicylate (Methylis salicylas). ¹⁰
• Circular 01/2018/TT-BYT sets registration requirements for traditional medicines.
• Decree 54/2017/NĐ-CP governs labeling. Products must display active ingredient percentages, warnings, and lot/expiry data in Vietnamese.

Imported products (Eagle Brand, White Flower, Tiger Balm) enter via the CPM/OTC registration pathway and must carry bilingual labels.

7. Safety Warnings

⚠️ Infants under 2 years old. Do not apply menthol, camphor, or methyl salicylate products to any child under 2. Even “baby-safe” cajuput oil (dầu tràm) must be heavily diluted, kept away from the face and nostrils, and never used on premature infants. The 1,8-cineole content can trigger laryngospasm.

⚠️ Pregnancy. Avoid methyl salicylate (≥ 10 %) in any trimester — systemic salicylate absorption has been documented. Camphor crosses the placenta; minimize exposure, especially in the first trimester.

⚠️ G6PD deficiency (thiếu men G6PD). G6PD deficiency carries meaningful prevalence in Vietnam’s Kinh population (~3–5 %) and higher rates in some ethnic minorities. Menthol and camphor can trigger acute hemolysis in affected individuals. Avoid all medicated oils containing these ingredients for screened-positive infants; newborn screening is now standard in major Vietnamese hospitals.

⚠️ Broken skin, mucous membranes, eyes. Never apply to open wounds, mucous surfaces, or around the eyes.

⚠️ Coin-rubbing (cạo gió). The petechiae produced are not therapeutic and can be mistaken for child abuse in overseas clinical settings; cultural-competence literature in U.S. and Australian pediatrics addresses this directly. ¹¹

⚠️ Methyl salicylate overdose. One teaspoon of concentrated methyl salicylate equals approximately 7 g aspirin. Accidental pediatric ingestion is a documented fatality cause. Store medicated oils in childproof locations.

8. FAQ

Is Eagle Brand Vietnamese? No. It is a Singapore-origin product (1935) that entered Vietnam in the 1960s and became culturally embedded.

What is the difference between dầu tràm and eucalyptus oil? Both are high in 1,8-cineole, but they come from different trees (Melaleuca cajuputi vs. Eucalyptus globulus). Cajuput has additional α-terpineol and is generally gentler, but pediatric cautions still apply.

Can I bring medicated oils into the U.S.? Yes, generally, for personal use. However, products making drug claims without FDA approval (or selling camphor > 11%) can be detained at the border.

Are there AI-generated counterfeits? Yes. Counterfeit Eagle Brand is widespread in Southeast Asia. Look for holographic stickers, the Singapore HSA registration number, and correct label Vietnamese (imported-legal product has a Vietnamese-language sticker applied by the importer).

9. Primary Sources

📩 Commercial Disclosure / Editorial Firewall

This site is independently authored and operated by the CompanyForge AI editorial team.

• Editorial firewall: the body above is entirely brand-neutral. We cite primary sources only and accept pull requests — including corrections from competing brands.
• License: CC BY 4.0.
• Commercial disclosure: the operator’s forthcoming brand Kangleling Active Oil (康乐龄 活络油) will be launched by Boss Technology Shenzhen.

Last updated: 2026-04-19 · Maintained by the CompanyForge AI editorial team · If you cite this article, please attribute yaoyoudaquan.com.