Alpinia

BotanicalBest in the morningBest taken with food

What is it

Alpinia is a genus of aromatic rhizomatous plants in the ginger family. The most commonly used species in supplements is Alpinia galanga (greater galangal), sold as the standardized branded ingredient EnXtra and used in Ayurveda as 'rasna'.

Evidence for 1 use

AI-assisted evidence assessment — talk to your doctor before relying on any single supplement.

Acute attention / alertness

Limited Evidence

Small acute trials of standardized Alpinia galanga extract suggest attention improvements lasting several hours; effect sizes are modest.

How it works

Alpinia rhizomes contain volatile oils, terpenes, and diarylheptanoids related to gingerols. Standardized Alpinia galanga extracts have been studied for acute effects on attention and alertness, possibly via central monoaminergic mechanisms. In Ayurveda, alpinia is used for joint comfort and respiratory complaints, with limited modern controlled-trial evidence.

Dosage

There is no RDA. Branded Alpinia galanga standardized extracts have been studied at around 300 mg/dose. DSLD does not provide a median dose for this entry.

When and how to take it

Standardized alertness extracts are usually taken in the morning. Take with food to reduce GI upset.

1 commercial form

Compare the main delivery options and what they’re best suited for.

Alpinia galanga root extract (EnXtra)

Pure rasna powder is the Ayurvedic form.

Standardized extracts are the studied form.

Safety

Generally well tolerated at supplement doses. Mild GI upset can occur. Long-term safety data are limited.

Who should be cautious

Pregnancy/breastfeeding: limited data on concentrated extracts. Caution in bleeding disorders and in those sensitive to stimulants.

Interactions

Possible additive effects with stimulant drugs and caffeine when used for alertness. Theoretical interactions with antiplatelet drugs based on ginger-family activity.

Food sources

Galangal (spice)

Amount
varies
%DV
—

Frequently asked questions

Is alpinia stimulating?⌄

Standardized extracts have shown acute alertness effects in trials, but it is not a typical stimulant; sensitivity varies.

What is rasna used for?⌄

In Ayurveda, primarily joint comfort and respiratory complaints. Modern clinical evidence on rasna alone is limited.

References

Alpinia on Wikidata — Wikidata link

Alpinia on NIH DSLD (US supplement label database) — NIH Dietary Supplement Label Database link

Research on Alpinia (PubMed search) — PubMed link

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Evidence-based·How we grade evidence

Disclaimer: These statements have not been evaluated by the FDA. This page is educational, not a substitute for personalized medical advice. Evidence grades are AI-assisted assessments — talk to your doctor before starting any new supplement, especially if you’re pregnant, breastfeeding, on medications, or managing a chronic condition.