Alpinia calcarata (Alpinia calcarata): Benefits, Dosage, Safety & Evidence

Frequently asked questions

How does Alpinia calcarata work for cough and bronchitis?

Alpinia calcarata contains active compounds including 1,8-cineole and terpinen-4-ol, which exhibit bronchodilatory and anti-inflammatory properties. These essential oil components help relax bronchial smooth muscle and reduce airway inflammation. The herb also contains flavonoids contributing to antioxidant activity. In Ayurveda and Siddha medicine, it functions as an expectorant, helping clear mucus from respiratory passages. Evidence level: C (preliminary research and traditional use support these mechanisms).

Can Alpinia calcarata interact with prescription medications?

Limited clinical data exists on specific drug interactions for Alpinia calcarata. Theoretically, its effects on liver metabolism and digestive function may interact with medications processed by hepatic enzymes. Caution is advised when taking anticoagulants, diabetes medications, or respiratory drugs concurrently. Patients on prescription medications should consult a healthcare provider before adding this herb to their regimen. Evidence level: C (based on pharmacological principles rather than clinical interaction studies).

What is the correct dosage of Alpinia calcarata for adults?

The traditional adult dosage for Alpinia calcarata is 3-5 grams of dried rhizome prepared as a decoction, taken twice daily. To prepare, boil the rhizome in water for 10-15 minutes, then strain. Dosage may vary depending on the condition being addressed. Standardized extracts may have different dosing guidelines. Consult a qualified Ayurvedic or Siddha practitioner for personalized recommendations. Evidence level: Traditional use.

Is Alpinia calcarata safe to take during pregnancy?

Alpinia calcarata is considered unsafe during pregnancy and should be strictly avoided. Large doses may stimulate uterine contractions, potentially endangering the pregnancy. Women who are pregnant, attempting to conceive, or breastfeeding should not use this herb. Traditional Ayurvedic and Siddha texts explicitly contraindicate its use in pregnancy. If accidental exposure occurs, contact a healthcare provider promptly. Evidence level: Traditional use and theoretical safety concerns.

What is Alpinia calcarata used for in Ayurvedic medicine?

Alpinia calcarata is used in Ayurveda and Siddha medicine primarily for respiratory conditions including cough, bronchitis, and as an expectorant. It is also traditionally indicated for joint pain, arthritis, and inflammatory musculoskeletal conditions. Digestive complaints such as indigestion and bloating represent additional traditional uses. The rhizome is the primary medicinal part. Evidence level: C (supported by traditional use and preliminary pharmacological studies).

What side effects can Alpinia calcarata cause?

Alpinia calcarata may cause gastrointestinal upset including nausea, stomach discomfort, and diarrhea, especially at higher doses. Skin sensitization or allergic reactions can occur with topical use. Individuals with allergies to plants in the Zingiberaceae family (ginger, turmeric, cardamom) may experience cross-reactivity and should avoid this herb. Discontinue use if adverse effects develop and consult a healthcare provider if symptoms persist. Evidence level: Traditional use and reported adverse effects.

PubMed-compiled information sheet

This sheet was compiled from PubMed (NIH) abstracts using AI assistance. Every factual claim is cited to a real PubMed article (see the source list). It has not yet been human-reviewed — confirm with a healthcare provider before use.

Compiled from 25 PubMed articles · model: gemma4:31b

Summary

Alpinia calcarata is a rhizomatous perennial herb used in traditional Sri Lankan medicine, demonstrating experimental antibacterial, anti-inflammatory, and antidiabetic activities [PMID:26009694].

Background

Alpinia calcarata Roscoe (Family: Zingiberaceae), also known as lesser galangal, is a rhizomatous perennial herb cultivated in tropical regions including Sri Lanka, India, Malaysia, China, Bangladesh, Indonesia, and Thailand [PMID:26009694, PMID:37715949].

Traditional uses

In traditional practices, the rhizomes are used to treat diabetes, rheumatism, gastrointestinal problems, inflammatory diseases, cough, respiratory problems, bronchitis, asthma, and arthritis [PMID:35026343, PMID:22209884].

Active compounds

Phytochemical screening has identified polyphenols, tannins, flavonoids, steroid glycosides, and alkaloids [PMID:26009694, PMID:21589752]. Specific compounds include galangin [PMID:35026343], stigmasterol [PMID:39520721], labdane-type diterpenoids (such as calcaratarins A-E) [PMID:12357393, PMID:10924169], and essential oil components including 1,8-cineole, alpha-terpineol, camphor, eucalyptol, and carotol [PMID:37715949, PMID:32419793].

Mechanism of action

Galangin from the rhizomes inhibits IRAK-1/MAPK/NF-κB p65 and JAK-1 signaling in LPS-stimulated cells [PMID:35026343]. The herb's anti-inflammatory effects are mediated through membrane stabilizing, antihistamine, and prostaglandin synthesis inhibition activities [PMID:22209884], as well as the modulation of COX-2 and PPAR-γ in obese models [PMID:39897811]. Antinociceptive effects are mediated via opioid mechanisms [PMID:15507354]. Calcaratarin D attenuates asthma by modulating alveolar macrophage function and suppressing Arg1 (M2 macrophage marker) [PMID:36440573].

Clinical evidence

Evidence DDiabetes

Ethanolic extract (200 mg/kg) brought altered biochemical profiles in streptozotocin-induced diabetic rats back to near normal [PMID:24502532].

Evidence DInflammation/Edema

Hot water and ethanolic extracts showed anti-inflammatory activity in carrageenan-induced paw edema models in rats [PMID:22209884]. Essential oils reduced TPA-induced skin inflammation in mice [PMID:32419793].

Evidence DPain (Nociception)

Aqueous and ethanolic extracts showed dose-dependent antinociceptive activity in hot plate and formalin tests in rats [PMID:15507354].

Evidence DAsthma

Calcaratarin D reduced serum IgE levels, mucus hypersecretion, and airway hyperresponsiveness in house dust mite-induced asthma mouse models [PMID:36440573].

Evidence DObesity

Methanol leaf extract (200mg/kg) decreased adiposity and adipocyte inflammation in high-fat diet-induced obese mice [PMID:39897811].

Evidence D

Safety & adverse effects

In a study on Ehrlich's ascitic carcinoma, host toxic effects were reported as not very high and recovered gradually within a few days after treatment [PMID:22221755].

Evidence summary

The current evidence is based entirely on in vitro studies and animal models (rats and mice), representing a low overall strength of clinical evidence (Level D).

PubMed sources

1.PMID: 26009694 (2015) — Alpinia calcarata Roscoe: A potential phytopharmacological source of natural medicine. · Pharmacognosy reviews
2.PMID: 35026343 (2022) — Identification of galangin as the bioactive compound from Alpinia calcarata (Haw.) Roscoe rhizomes to inhibit IRAK-1/ MAPK/ NF-κB p65 and JAK-1 signaling in LPS stimulated RAW 264.7 cells. · Journal of ethnopharmacology
3.PMID: 24502532 (2014) — Effect of Alpinia calcarata on glucose uptake in diabetic rats-an in vitro and in vivo model. · Journal of diabetes and metabolic disorders
4.PMID: 22209884 (2012) — Alpinia calcarata Roscoe: a potent antiinflammatory agent. · Journal of ethnopharmacology
5.PMID: 33403456 (2021) — Investigation of Alpinia calcarata constituent interactions with molecular targets of rheumatoid arthritis: docking, molecular dynamics, and network approach.

Alpinia calcarata

Sources & Citations

Calculate a safe dose of Alpinia calcarata

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Frequently asked questions

Summary

Background

Traditional uses

Active compounds

Mechanism of action

Clinical evidence

Safety & adverse effects

Evidence summary

PubMed sources

Government sources

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Sources & Citations

Calculate a safe dose of Alpinia calcarata

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Frequently asked questions

Summary

Background

Traditional uses

Active compounds

Mechanism of action

Clinical evidence

Safety & adverse effects

Evidence summary

PubMed sources

Government sources