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Limited evidenceJoints & skin

Galangal (Alpinia)

A ginger relative whose joint reputation comes from one large trial where it was combined with ginger. On its own it has been studied mainly for alertness, not for arthritis.

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What the science says

  • Knee osteoarthritis Limited evidence

    A randomized, double-blind, placebo-controlled multicentre trial in 261 patients tested a standardised extract combining Zingiber officinale and Alpinia galanga and found a statistically significant but, in the authors' own words, moderate reduction in knee pain on standing (63% versus 50% responders). Because galangal was given with ginger, the trial cannot show what galangal contributes alone.

  • Ginger as the likely active partner Limited evidence

    A meta-analysis of randomized placebo-controlled trials of ginger in osteoarthritis found a modest reduction in pain and disability, with more gastrointestinal side effects than placebo. Ginger, not galangal, is the ingredient with an independent evidence base.

  • Alertness and attention Limited evidence

    A randomized placebo-controlled study found an Alpinia galanga extract improved measures of mental alertness and sustained attention with or without caffeine. This is a different use from the joint claim, and the study was small.

Dosage & safety

Studied doseThe knee osteoarthritis trial used 255 mg of the combined ginger–galangal extract twice daily. Alertness studies used 300 mg/day of Alpinia galanga extract.
SafetyThe osteoarthritis trial found significantly more gastrointestinal adverse events with the extract than with placebo, though most were mild. Like ginger, galangal may have a mild antiplatelet effect, so caution is warranted with anticoagulants and before surgery. Avoid concentrated extracts in pregnancy.

How to take it

TimingSplit across two doses for joint use; the alertness studies dosed it once in the morning.
With food?Take it with food — gastrointestinal upset was significantly more common than placebo in the osteoarthritis trial.
Worth knowingThe knee-pain evidence is for a ginger-galangal combination, not galangal alone, so a single-herb product is not what was tested.

Interactions

With medications

  • warfarin, other anticoagulants and antiplatelets

    Like ginger, galangal has mild antiplatelet activity that may add to bleeding risk. talk to your doctor before combining, and stop before surgery

With other supplements

  • ginger, turmeric, fish oil and other antiplatelet supplements

    Additive effect on platelet function. do not stack several at high doses

Well-established interactions only — this is not a complete list. Always tell your doctor and pharmacist what you take.

Frequently asked questions

Does galangal help arthritis or knee pain?

The evidence for galangal is limited: the key trial in 261 patients tested a ginger-plus-galangal extract and found a moderate reduction in knee pain (63% versus 50% responders). Because galangal was combined with ginger, the trial cannot show what galangal does alone.

Is galangal the same as ginger for joint pain?

No: ginger is the partner with its own evidence base, with a meta-analysis showing a modest reduction in osteoarthritis pain. Galangal has no independent joint trials, so a galangal-only product is not what was tested.

Does galangal improve focus and alertness?

A small randomized placebo-controlled study found 300 mg/day of Alpinia galanga extract improved measures of mental alertness and sustained attention. It is a single small study, so the evidence is limited.

Does galangal have side effects?

In the knee trial, the ginger-galangal extract caused significantly more gastrointestinal side effects than placebo, mostly mild, so take galangal with food. It may have a mild antiplatelet effect, so talk to your doctor if you take anticoagulants, and avoid concentrated extracts in pregnancy.

Scientific references

Related in Joints & skin

Herbal medicines: what the evidence says (335)