Galangal is native to Southeast Asia, where it has long been both a culinary staple — particularly central to Thai, Indonesian, and Malaysian cooking — and a component of traditional medicine systems across the region, valued for warming and digestive properties similar to its cousin, ginger. Chinese traditional medicine adopted galangal early, incorporating it into formulas for digestive and circulatory complaints.
Arab traders introduced galangal to medieval Europe, where it briefly became a fashionable spice and medicinal ingredient among the wealthy, mentioned in medieval herbals and even referenced by Hildegard of Bingen, the 12th-century German abbess and healer, who recommended it for heart conditions. Its European popularity faded after the spice trade shifted toward other, more dominant spices, and galangal remains today primarily a Southeast Asian culinary and medicinal staple rather than a global one.
Galangal is the clearest "Limited" rating among the remedies covered so far, and it's worth being direct about why. Most of the clinical trial evidence that exists studies galangal combined with ginger, not galangal on its own — one notable trial found a mixed galangal-and-ginger extract moderately reduced walking pain in people with knee osteoarthritis over six weeks, and a broader meta-analysis of Zingiberaceae (ginger-family) extracts for chronic pain found a moderate-to-large pooled effect, but again across mixed formulations, not galangal specifically.
Reviews focused specifically on galangal monotherapy are consistent in noting that robust human clinical trials are lacking — most supporting evidence comes from animal and lab studies showing anti-inflammatory and antioxidant activity, which is a meaningfully weaker form of evidence than human trials. One separate, more specific human trial did find galangal extract improved SSRI-related erectile dysfunction symptoms, but this is a single trial on a narrow use, not broad support for galangal's traditional digestive or joint-pain uses.
Fresh rhizome sliced or ground into curry pastes and soups (most famously in dishes like Thai tom kha gai), or dried and prepared as a decoction for medicinal use.