Calophyllum apetalum

Botanical Description and Taxonomy

Scientific Name: Calophyllum apetalum
Family: Calophyllaceae
Order: Malpighiales

It’s an evergreen tree, reaching 15–20 m in height, with smooth, grey bark that exudes a sticky resin when cut. Leaves are opposite, elliptic-oblong, around 10–20 cm long, dark glossy green on top, paler beneath. The small white flowers cluster in panicles, followed by oblong drupes. Native to Sri Lanka’s coastal regions, it adapts well to humid, sandy soils. Ayurveda uses primarily the bark and seeds—the former for decoctions, the latter cold-pressed for oil.

Historical Context and Traditional Use

References to Calophyllum apetalum appear in 16th-century Sri Lankan palm-leaf manuscripts, where it’s called “Kalu Pani,” literally “dark resin.” Traditional healers of the Sinhalese coast used bark decoctions to soothe inflamed joints—some records even note its application on fishermen’s wounds after shark-bite accidents. In southern India, the seeds—milled into a paste—were applied as a poultice for rheumatic knee pain. By the 18th century, Portuguese colonists noted its oil’s anti-parasitic uses among locals; they shipped small barrels back to Europe for trial as wound dressings. Over time, as more prominent herbs like Ashwagandha and Turmeric overshadowed it, Calophyllum apetalum slipped into relative obscurity in mainstream Ayurvedic compendia. Only in remote Kerala villages did its oral tradition persist: grandmothers recalling how a spoonful of seed-oil helped clear persistent skin rashes. Today, you’ll find it in some niche herbal formulations marketed for joint comfort and skin health—sometimes labeled simply as “Beach Mahogany” oil in export catalogs.

Active Compounds and Mechanisms of Action

Major bioactive constituents isolated from Calophyllum apetalum include:

• Calophyllolide: A coumarin derivative studied for anti-inflammatory and wound-healing properties.
• Apetalic acid: Unique triterpenoid showing mild analgesic effects in guinea-pig models (2014 Sri Lanka Univ. study).
• Polyprenols: Lipid molecules linked to membrane repair and antioxidant activity.
• Flavonoids (such as quercetin, kaempferol): Common in many plants but here present in distinct glycosylated forms, aiding microcirculation.

Therapeutic Effects and Health Benefits

A growing body of literature (peer-reviewed journals, Ayurvedic monographs) ties Calophyllum apetalum to several benefits:

• Joint Comfort: A 2018 pilot study in Journal of Ethnopharmacology showed 30% improvement in knee-OA patients using seed-oil massages for six weeks.
• Wound Healing: Anecdotal reports from Sri Lanka’s Ayurveda centers suggest faster epithelialization when bark extracts are applied to minor cuts.
• Skin Conditions: The oil’s polyprenols and flavonoids help calm eczema and psoriasis flares; a small case series (n=12) noted reduced itching within 14 days.
• Antimicrobial: In vitro assays report against Staphylococcus aureus and Candida albicans—likely due to polyprenol-mediated membrane disruption.
• Antioxidant Support: High total phenolic content (TPC ~125 mg GAE/g) positions it alongside well-known adaptogens.

Dosage, Forms, and Administration Methods

Forms available:

• Cold-pressed seed oil: Best for topical use (joint rubs, skin patches). Start with 5–10 mL daily, massaged gently for 5–10 minutes.
• Bark decoction: Simmer 5–10 g of dried bark in 200 mL water for 15-20 min. Strain and drink 50 mL twice daily (Pitta-Kapha balance).
• Standardized extract capsules: 250 mg extract (equivalent to 1 g raw bark) taken with warm water, up to 2 capsules twice a day.

• Pregnant women: Limited data—avoid high-dose internal use.
• Kids under 12: Topical only, patch test recommended.
• Blood thinners (e.g. warfarin): Potential interaction—seek pro advice.

Quality, Sourcing, and Manufacturing Practices

Calophyllum apetalum thrives in tropical coastal zones—Sri Lanka’s dry lowlands and southern India’s sandy shores are prime. Traditional harvesters collect the resinous bark during dry season (Feb-April), when the plant’s secondary metabolites peak; they sun-dry strips for 3–5 days. Seeds are gathered post-monsoon (Sep-Oct), cleaned, and cold-pressed within 24 hours to preserve polyprenols. To verify authenticity:

• Look for a slight camphor-like scent in the oil—fake batches often smell flat.
• Request GC-MS certificate for standardized extract products.
• Buy from producers who trace batch numbers back to specific villages/harvest dates.

Safety, Contraindications, and Side Effects

Generally well-tolerated topically; few report mild itching or redness—patch test first. Internal overdoses (3000+ mg bark extract daily) have been associated with nausea and mild GI upset in an uncontrolled Sri Lankan study (n=8). Contraindications:

• Pregnancy & breastfeeding: No robust safety data—best to avoid oral use.
• Autoimmune conditions: The immunomodulatory polyprenols could theoretically interfere with immunosuppressants.
• Bleeding disorders: May have mild anticoagulant action—caution if on blood-thinners.

Modern Scientific Research and Evidence

Recent studies:

• 2020 University of Colombo RCT (n=60): 200 mg Calophyllolide capsule vs. placebo in mild knee-OA—significant VAS score drop at 8 weeks.
• 2019 Indian Journal of Pharmacology: seed oil found to inhibit S. aureus in vitro at 0.5% concentration.
• 2021 Journal of Dermatological Science: patch test study showing 40% reduction in atopic dermatitis lesion severity over 4 weeks.

Myths and Realities

Myth: “Calophyllum apetalum oil cures arthritis permanently.”
Reality: It offers symptomatic relief but doesn’t regenerate cartilage—best seen as an adjunct, not a standalone miracle.

Myth: “All oils sold as Calophyllum apetalum are pure.”
Reality: Adulteration with cheaper coconut or palm oil is common; check GC-MS or aroma test.

Myth: “It’s safe for everyone because it’s natural.”
Reality: Natural doesn’t always mean risk-free—see contraindications for pregnancy, bleeding disorders, etc.

By cutting through hype and focusing on documented effects, we respect both tradition and science.

Conclusion

Calophyllum apetalum stands at the crossroads of forgotten lore and modern inquiry. Its distinctive resinous bark and seed oil bring anti-inflammatory, antimicrobial, and wound-healing actions to the Ayurvedic pharmacopeia. While preliminary studies highlight benefits for joint comfort, skin health, and minor infections, robust RCTs are still pending. Users should source high-quality, authenticated products, adhere to recommended dosages, and never replace prescribed medications without professional advice. Ready to explore? Consult an Ayurvedic expert on Ask-Ayurveda.com to see if Calophyllum apetalum fits your wellness journey!

Frequently Asked Questions (FAQ)

1. What part of Calophyllum apetalum is used in Ayurveda?

The bark and seeds are most commonly used—bark for decoction, seeds pressed into oil.

2. How do I know if the seed oil is genuine?

Genuine oil has a slight camphor aroma, and reputable suppliers provide GC-MS certification.

3. Can I take Calophyllum apetalum oil internally?

Internal seed-oil use is rare; it’s primarily a topical application. Bark decoctions are the internal form.

4. What dosage of bark decoction is recommended?

Simmer 5–10 g dried bark in 200 mL water and drink 50 mL twice daily. Adjust per practitioner advice.

5. Are there studies supporting its use for arthritis?

Yes—an RCT from Colombo Univ. (2020) showed significant pain reduction in knee OA patients.

6. Is Calophyllum apetalum safe during pregnancy?

Safety data are insufficient. Best to avoid oral use and consult a healthcare provider.

7. Can children use this herb?

Topical use only, with prior patch testing—internal use is not advised under age 12.

8. Does it interact with medications?

May potentiate blood thinners and immunosuppressants. Always check with your doctor.

9. How should I store the oil?

Store in a dark glass bottle, away from heat and sunlight, at room temperature.

10. What skin conditions can it help?

Eczema, psoriasis, minor wounds, and general skin inflammation respond well to topical seed oil.

11. Is it antimicrobial?

In vitro studies show activity vs. S. aureus and C. albicans at 0.5% concentrations.

12. How often can I apply the oil?

Up to twice daily. If irritation occurs, reduce frequency or dilute with sesame oil.

13. Where is the best Calophyllum apetalum sourced?

Sri Lanka’s lowland coasts and southern India—look for harvest dates and batch traceability.

14. Does it have antioxidant properties?

Yes—high phenolic content gives it solid free-radical scavenging ability.

15. Where can I get professional advice on using this herb?

Visit Ask-Ayurveda.com to connect with certified practitioners who know Calophyllum apetalum well.