About Gastrodin (Gastrodia elata / Tianma)
Gastrodin is the principal glycoside of Gastrodia elata (Tianma), a traditional East-Asian rhizome used for headache, dizziness/vertigo and cognition. Human evidence is limited and largely regional: Chinese trials for vascular dementia, headache and dizziness, a recent cognitive-enhancement RCT in middle-aged adults, and a 2025 postoperative-delirium RCT — mostly small, with extract standardization varying widely. A GABA-modulating neuroprotectant; preliminary, not established. Alias scoped to the named compound so whole Gastrodia rhizome products are not scored as pure gastrodin.
What Gastrodin (Gastrodia elata / Tianma) supports
- Gastrodia elata glycoside for headache, dizziness, cognition
How much Gastrodin (Gastrodia elata / Tianma) to take
The RDA prevents deficiency. The effective range is what clinical trials used to actually move the outcome.
Effective
300–600
mg
Range refers to the gastrodin COMPOUND. Most oral cognitive trials used a standardized Gastrodia extract delivering far less gastrodin than the rhizome weight implies; the 600mg figure comes from intravenous pure gastrodin for postoperative delirium. Oral pure-gastrodin dosing for cognition is therefore extrapolated.
Clinical evidence
Limited clinical evidence. Limited, mostly regional human trials; preliminary
Reference