Gastrodin

Gastrodin at a Glance

Gastrodin, chemically 4-hydroxybenzyl alcohol 4-O-β-D-glucoside, is the headline constituent of Gastrodia elata — tian ma (天麻), the achlorophyllous medicinal orchid that is one of the most important nerve remedies in Chinese medicine. Tian ma is a classical treatment for headache, dizziness and vertigo, convulsions and childhood epilepsy, and gastrodin is the molecule used to identify and standardise it ^{1Reference 1Wu YN et al. · 2023ReviewGastrodia elata Bl.: A Comprehensive Review of Its Traditional Use, Botany, Phytochemistry, Pharmacology, and PharmacokineticsView study →}.

The single most important thing to understand about gastrodin is that it is largely a delivery form. It is the glucoside of a smaller phenol, 4-hydroxybenzyl alcohol (HBA, also called gastrodigenin) — and in the gut and body that sugar is cleaved off by β-glucosidase, releasing the aglycone. Both the glucoside and the aglycone cross the blood–brain barrier, but the aglycone is the more lipophilic, brain-penetrant partner, so much of what is reported as “gastrodin” pharmacology is really 4-hydroxybenzyl alcohol at work ^{3,4Reference 3Dai Y et al. · 2024Gastrodin, a Promising Natural Small Molecule for the Treatment of Central Nervous System Disorders, and Its Recent Progress in Synthesis, Pharmacology and PharmacokineticsView study →Reference 4Lin LC et al. · 2008AnimalPharmacokinetics of gastrodin and its metabolite p-hydroxybenzyl alcohol in rat blood, brain and bile by microdialysis coupled to LC-MS/MSView study →}. Upstream, gastrodin itself is carried in the rhizome partly as larger citric-acid esters called parishins, which release gastrodin on processing and digestion — a prodrug chain that runs parishin → gastrodin → HBA.

Gastrodin is unusual among plant phenolics in having a genuine clinical footprint: in China an injectable gastrodin drug (“tian ma su”) has been used for decades for vertigo and vascular/tension headache, and it appears in modern Chinese randomised trials and meta-analyses ^{8,9,10Reference 8Zhou X et al. · 2022Meta-analysisEffectiveness of gastrodin for migraine: A meta-analysisView study →Reference 9Yan Y et al. · 2021Meta-analysisYan Y, Zhang YL, Jin XL, Liao X, Gong X, Chen WJ, Wei JJ, Fan XM, Piao JZ, Fu GJ, Guo CL (2021). [Systematic review and Meta-analysis of efficacy and safety of gastrodin in treatment of tension-type headache]. Zhongguo Zhong Yao Za Zhi (China Journal of Chinese Materia Medica). https://pubmed.ncbi.nlm.nih.gov/34581069/View study →Reference 10Lai Y et al. · 2022ObservationalClinical and economic analysis of Gastrodin injection for dizziness or vertigo: a retrospective cohort study based on electronic health records in ChinaView study →}. The honest caveat — carried through everything below — is that this human evidence is dominated by the injection or by whole tian ma, often as an adjunct and of variable methodological quality, while gastrodin’s neuroprotective and anticonvulsant mechanisms remain largely preclinical (rodent and cell) ^{2,3Reference 2Liu Y et al. · 2018ReviewA Review on Central Nervous System Effects of GastrodinView study →Reference 3Dai Y et al. · 2024Gastrodin, a Promising Natural Small Molecule for the Treatment of Central Nervous System Disorders, and Its Recent Progress in Synthesis, Pharmacology and PharmacokineticsView study →}.

Gastrodin, Parishin & p-Hydroxybenzyl Alcohol

The point of this molecule is the prodrug chain it sits in the middle of. Tian ma does not present a single active — it presents a small family of interconverting phenolics, and gastrodin is the hub that links the storage forms to the brain-active aglycone.

• Parishins (parishin A, B, C, E) are the upstream storage forms — gastrodin units esterified to citric acid. They are the most abundant actives in the fresh/aqueous rhizome, and they hydrolyse to gastrodin during steaming, drying, decoction and digestion. In rat distribution work, parishin behaves as a precursor pool that feeds gastrodin systemically ^{13Reference 13Jiang Z et al. · 2017AnimalRelative tissue distribution and excretion studies of gastrodin and parishin from powder and extract of Gastrodiae Rhizoma in rat by UHPLC-ESI-MS/MSView study →}. There is no parishin page here yet; treat it as gastrodin-in-waiting.
• Gastrodin is the glucoside — the stable, water-soluble, pharmacopoeial marker. It is what quality standards measure and what the injection delivers. But it is not very lipophilic, and its own tissue residence is short.
• 4-Hydroxybenzyl alcohol (HBA / gastrodigenin) is the aglycone — gastrodin minus its sugar. β-Glucosidase (in the gut microbiota and in tissue) cleaves gastrodin to HBA, which is more lipophilic and crosses into the brain, where much of the central activity is thought to occur ^{3,4Reference 3Dai Y et al. · 2024Gastrodin, a Promising Natural Small Molecule for the Treatment of Central Nervous System Disorders, and Its Recent Progress in Synthesis, Pharmacology and PharmacokineticsView study →Reference 4Lin LC et al. · 2008AnimalPharmacokinetics of gastrodin and its metabolite p-hydroxybenzyl alcohol in rat blood, brain and bile by microdialysis coupled to LC-MS/MSView study →}. Tellingly, the conversion is bidirectional — administered HBA can be re-glucosylated back to gastrodin in vivo — so the two circulate as an interconverting pair ^{4Reference 4Lin LC et al. · 2008AnimalPharmacokinetics of gastrodin and its metabolite p-hydroxybenzyl alcohol in rat blood, brain and bile by microdialysis coupled to LC-MS/MSView study →}.

A third sibling, the aldehyde p-hydroxybenzaldehyde, sits alongside them in the rhizome as a minor marker with its own GABAergic profile. The practical consequence of the chain is a recurring interpretive trap: a study that doses gastrodin and sees a central effect may be reporting the action of HBA, and a study on whole tian ma is reporting the whole parishin → gastrodin → HBA system, not the glucoside alone.

Tian Ma & the Gastrodin Injection

Gastrodin is one of the few plant glucosides to have become a registered drug. In China, gastrodin injection (“tian ma su injection”) and oral gastrodin have been used clinically for decades, principally for two indications that map onto tian ma’s classical uses: vertigo/dizziness and vascular (and tension-type) headache ^{8,9,10Reference 8Zhou X et al. · 2022Meta-analysisEffectiveness of gastrodin for migraine: A meta-analysisView study →Reference 9Yan Y et al. · 2021Meta-analysisYan Y, Zhang YL, Jin XL, Liao X, Gong X, Chen WJ, Wei JJ, Fan XM, Piao JZ, Fu GJ, Guo CL (2021). [Systematic review and Meta-analysis of efficacy and safety of gastrodin in treatment of tension-type headache]. Zhongguo Zhong Yao Za Zhi (China Journal of Chinese Materia Medica). https://pubmed.ncbi.nlm.nih.gov/34581069/View study →Reference 10Lai Y et al. · 2022ObservationalClinical and economic analysis of Gastrodin injection for dizziness or vertigo: a retrospective cohort study based on electronic health records in ChinaView study →}.

• Vertigo and dizziness. A large retrospective cohort built from Chinese electronic health records analysed gastrodin injection in dizziness/vertigo and found it clinically used and reasonably tolerated; earlier single-blind randomised work reported it non-inferior to (and in symptom relief better than) betahistine injection, with a comparable low rate of adverse reactions ^{10Reference 10Lai Y et al. · 2022ObservationalClinical and economic analysis of Gastrodin injection for dizziness or vertigo: a retrospective cohort study based on electronic health records in ChinaView study →}. This is real-world and trial human data — but it is the injectable drug, not an oral supplement.
• Migraine and headache. Gastrodin has been used for primary headache in China for more than thirty years. Meta-analyses pooling Chinese randomised trials report that gastrodin reduces migraine frequency, pain intensity and attack duration and slows elevated cerebral blood-flow velocity ^{8Reference 8Zhou X et al. · 2022Meta-analysisEffectiveness of gastrodin for migraine: A meta-analysisView study →}, with a parallel meta-analysis in tension-type headache reaching similar conclusions ^{9Reference 9Yan Y et al. · 2021Meta-analysisYan Y, Zhang YL, Jin XL, Liao X, Gong X, Chen WJ, Wei JJ, Fan XM, Piao JZ, Fu GJ, Guo CL (2021). [Systematic review and Meta-analysis of efficacy and safety of gastrodin in treatment of tension-type headache]. Zhongguo Zhong Yao Za Zhi (China Journal of Chinese Materia Medica). https://pubmed.ncbi.nlm.nih.gov/34581069/View study →}. Mechanistically, a 2024 mouse study tied gastrodin’s anti-migraine effect to inhibition of a succinate/HIF-1α/TRPM2 pathway in trigeminal-ganglion neurons ^{7Reference 7Ma C et al. · 2024Gastrodin alleviates NTG-induced migraine-like pain via inhibiting succinate/HIF-1α/TRPM2 signaling pathway in trigeminal ganglionView study →}.

The load-bearing caveat is quality and form. The favourable headache/vertigo meta-analyses rest largely on Chinese-language RCTs of variable methodological quality, frequently using the injection and frequently as an add-on to other treatment — so the effect size and the contribution of gastrodin alone are uncertain. The clearest test of oral isolated gastrodin is the ongoing multicentre, placebo-controlled EASTERN trial in medication-overuse headache, whose results are not yet in ^{11Reference 11Kong F et al. · 2022RCTEfficacy and tolerability of oral gastrodin for medication overuse headache (EASTERN): Study protocol for a multicenter randomized double-blind placebo-controlled trialView study →}. Until then, “tian ma works for headache and vertigo” is better supported than “oral gastrodin, on its own, is proven.”

What It's Used For

Gastrodin’s research is broad and coherent — it clusters tightly on the central nervous system — but it splits sharply by route and form: a real (if uneven) human signal for the injection/whole herb in headache and vertigo, sitting on top of a large preclinical mechanistic body for neuroprotection, epilepsy and cognition.

Evidence by IndicationStrength of support · Beta

Support is an experimental score — weighted by study type (human > animal > in vitro) and volume. A beta, not a validated metric. The two headache/vertigo rows carry human trial data (mostly injection/whole-herb, variable quality); the CNS-mechanism rows are preclinical. Read the per-row basis.

01Migraine / vascular headachePromising55%Meta-analyses of Chinese RCTs + a defined trigeminal mechanism; mostly injection/adjunct ^{7,8Reference 7Ma C et al. · 2024Gastrodin alleviates NTG-induced migraine-like pain via inhibiting succinate/HIF-1α/TRPM2 signaling pathway in trigeminal ganglionView study →Reference 8Zhou X et al. · 2022Meta-analysisEffectiveness of gastrodin for migraine: A meta-analysisView study →}

02Vertigo / dizzinessPromising46%Real-world cohort + RCT vs betahistine; the registered injection, not oral isolate ^{10Reference 10Lai Y et al. · 2022ObservationalClinical and economic analysis of Gastrodin injection for dizziness or vertigo: a retrospective cohort study based on electronic health records in ChinaView study →}

03Anticonvulsant / epilepsyShaky42%Classical tian ma use + GABA-shunt mechanism; human data thin, effect largely via HBA ^{2,5Reference 2Liu Y et al. · 2018ReviewA Review on Central Nervous System Effects of GastrodinView study →Reference 5An SJ et al. · 2003Gastrodin decreases immunoreactivities of gamma-aminobutyric acid shunt enzymes in the hippocampus of seizure-sensitive gerbilsView study →}

04Neuroprotective / neurodegenerationShaky40%Large rodent ischaemia/PD/AD body; antioxidant + anti-neuroinflammatory; all preclinical ^{2,3Reference 2Liu Y et al. · 2018ReviewA Review on Central Nervous System Effects of GastrodinView study →Reference 3Dai Y et al. · 2024Gastrodin, a Promising Natural Small Molecule for the Treatment of Central Nervous System Disorders, and Its Recent Progress in Synthesis, Pharmacology and PharmacokineticsView study →}

05Antidepressant / anxiolyticShaky32%Rodent forced-swim/behavioural work, gastrodin + HBA via monoamines; isolate, preclinical ^{6Reference 6Chen WC et al. · 2016Anti-depressant effects of Gastrodia elata Blume and its compounds gastrodin and 4-hydroxybenzyl alcohol, via the monoaminergic system and neuronal cytoskeletal remodelingView study →}

Mechanisms

The load-bearing point: gastrodin is best read as a water-soluble prodrug. Its defining pharmacokinetic step — cleavage to the lipophilic aglycone 4-hydroxybenzyl alcohol — is upstream of most of the CNS targets in this table, which is why studies dosing “gastrodin” and studies dosing whole tian ma often report the same effects ^{3,4Reference 3Dai Y et al. · 2024Gastrodin, a Promising Natural Small Molecule for the Treatment of Central Nervous System Disorders, and Its Recent Progress in Synthesis, Pharmacology and PharmacokineticsView study →Reference 4Lin LC et al. · 2008AnimalPharmacokinetics of gastrodin and its metabolite p-hydroxybenzyl alcohol in rat blood, brain and bile by microdialysis coupled to LC-MS/MSView study →}.

Pharmacokinetics

Gastrodin is highly water-soluble and rapidly absorbed after oral or parenteral dosing, but it is not a durable circulating molecule: it is quickly deglycosylated to 4-hydroxybenzyl alcohol by β-glucosidase in the gut microbiota and tissues, and it has a short half-life ^{3,4Reference 3Dai Y et al. · 2024Gastrodin, a Promising Natural Small Molecule for the Treatment of Central Nervous System Disorders, and Its Recent Progress in Synthesis, Pharmacology and PharmacokineticsView study →Reference 4Lin LC et al. · 2008AnimalPharmacokinetics of gastrodin and its metabolite p-hydroxybenzyl alcohol in rat blood, brain and bile by microdialysis coupled to LC-MS/MSView study →}. Microdialysis work in rats tracking gastrodin and its metabolite simultaneously in blood, brain and bile confirmed that both the glucoside and the aglycone cross the blood–brain barrier, with gastrodin rapidly decomposed to HBA in brain, blood and liver ^{4Reference 4Lin LC et al. · 2008AnimalPharmacokinetics of gastrodin and its metabolite p-hydroxybenzyl alcohol in rat blood, brain and bile by microdialysis coupled to LC-MS/MSView study →}. The interconversion is bidirectional — dosed HBA is partly re-glucosylated to gastrodin — so the pair equilibrate in vivo ^{4Reference 4Lin LC et al. · 2008AnimalPharmacokinetics of gastrodin and its metabolite p-hydroxybenzyl alcohol in rat blood, brain and bile by microdialysis coupled to LC-MS/MSView study →}. Distinctively, brain accumulation rises under cerebral ischaemia (a compromised barrier lets more in), which is part of why the neuroprotective models are plausible in principle ^{3Reference 3Dai Y et al. · 2024Gastrodin, a Promising Natural Small Molecule for the Treatment of Central Nervous System Disorders, and Its Recent Progress in Synthesis, Pharmacology and PharmacokineticsView study →}. Upstream, the parishins act as a slow-release precursor pool that feeds systemic gastrodin after oral dosing of the powder or extract ^{13Reference 13Jiang Z et al. · 2017AnimalRelative tissue distribution and excretion studies of gastrodin and parishin from powder and extract of Gastrodiae Rhizoma in rat by UHPLC-ESI-MS/MSView study →}. Robust human ADME for isolated gastrodin (oral bioavailability, Cmax, half-life) is thinly characterised relative to the animal work ^{3Reference 3Dai Y et al. · 2024Gastrodin, a Promising Natural Small Molecule for the Treatment of Central Nervous System Disorders, and Its Recent Progress in Synthesis, Pharmacology and PharmacokineticsView study →}.

Clinical Trials

Human evidence is real but form-skewed: it belongs mostly to the Chinese gastrodin injection and to whole tian ma, in headache and vertigo, with the isolated oral question still open.

Last checked: July 2026.

Isolate vs. Plant Studies

The split is unusually clean for a plant molecule. The human evidence is closer to the plant/whole-drug end. Even where a trial names “gastrodin,” it is usually the injection or an extract standardised to gastrodin, used in Chinese practice for headache or vertigo — so the clinical signal belongs to tian ma delivered as gastrodin, not to a purified oral supplement ^{8,9,10Reference 8Zhou X et al. · 2022Meta-analysisEffectiveness of gastrodin for migraine: A meta-analysisView study →Reference 9Yan Y et al. · 2021Meta-analysisYan Y, Zhang YL, Jin XL, Liao X, Gong X, Chen WJ, Wei JJ, Fan XM, Piao JZ, Fu GJ, Guo CL (2021). [Systematic review and Meta-analysis of efficacy and safety of gastrodin in treatment of tension-type headache]. Zhongguo Zhong Yao Za Zhi (China Journal of Chinese Materia Medica). https://pubmed.ncbi.nlm.nih.gov/34581069/View study →Reference 10Lai Y et al. · 2022ObservationalClinical and economic analysis of Gastrodin injection for dizziness or vertigo: a retrospective cohort study based on electronic health records in ChinaView study →}. The one design aimed squarely at the isolated oral compound, EASTERN, has not reported ^{11Reference 11Kong F et al. · 2022RCTEfficacy and tolerability of oral gastrodin for medication overuse headache (EASTERN): Study protocol for a multicenter randomized double-blind placebo-controlled trialView study →}.

The mechanistic depth is the isolate — but in animals. GABA-shunt suppression ^{5Reference 5An SJ et al. · 2003Gastrodin decreases immunoreactivities of gamma-aminobutyric acid shunt enzymes in the hippocampus of seizure-sensitive gerbilsView study →}, antioxidant/anti-neuroinflammatory neuroprotection ^{2,3Reference 2Liu Y et al. · 2018ReviewA Review on Central Nervous System Effects of GastrodinView study →Reference 3Dai Y et al. · 2024Gastrodin, a Promising Natural Small Molecule for the Treatment of Central Nervous System Disorders, and Its Recent Progress in Synthesis, Pharmacology and PharmacokineticsView study →}, the trigeminal succinate/HIF-1α/TRPM2 anti-migraine pathway ^{7Reference 7Ma C et al. · 2024Gastrodin alleviates NTG-induced migraine-like pain via inhibiting succinate/HIF-1α/TRPM2 signaling pathway in trigeminal ganglionView study →} and the monoaminergic antidepressant-like effect ^{6Reference 6Chen WC et al. · 2016Anti-depressant effects of Gastrodia elata Blume and its compounds gastrodin and 4-hydroxybenzyl alcohol, via the monoaminergic system and neuronal cytoskeletal remodelingView study →} are studied with purified gastrodin (or gastrodin plus HBA) in rodents and cells. Two structural caveats sit on top of that: much of the effect is really the aglycone the body makes from gastrodin ^{3,4Reference 3Dai Y et al. · 2024Gastrodin, a Promising Natural Small Molecule for the Treatment of Central Nervous System Disorders, and Its Recent Progress in Synthesis, Pharmacology and PharmacokineticsView study →Reference 4Lin LC et al. · 2008AnimalPharmacokinetics of gastrodin and its metabolite p-hydroxybenzyl alcohol in rat blood, brain and bile by microdialysis coupled to LC-MS/MSView study →}, and in the whole rhizome gastrodin acts within a parishin → gastrodin → HBA system rather than alone ^{13Reference 13Jiang Z et al. · 2017AnimalRelative tissue distribution and excretion studies of gastrodin and parishin from powder and extract of Gastrodiae Rhizoma in rat by UHPLC-ESI-MS/MSView study →}. So the correct framing is decent isolate mechanism (preclinical) + a genuine but form-limited whole-drug clinical record — and the two should not be collapsed into “oral gastrodin is a proven neuro-supplement.”

Its Role in Plants

Gastrodia elata is a striking plant: a leafless, rootless, chlorophyll-free orchid that cannot photosynthesise and lives by parasitising the fungi Armillaria and Mycena for carbon. Its underground tuber is the drug tian ma. In that tissue, gastrodin and its relatives are phenolic products of the shikimate/phenylpropanoid economy, stored in large part as the citric-acid-ester parishins; gastrodin and free 4-hydroxybenzyl alcohol are released from these precursors, and a substantial share of the gastrodin found in a processed rhizome is generated during the traditional steaming and drying rather than stored as the free glucoside in the living tuber ^{1,13Reference 1Wu YN et al. · 2023ReviewGastrodia elata Bl.: A Comprehensive Review of Its Traditional Use, Botany, Phytochemistry, Pharmacology, and PharmacokineticsView study →Reference 13Jiang Z et al. · 2017AnimalRelative tissue distribution and excretion studies of gastrodin and parishin from powder and extract of Gastrodiae Rhizoma in rat by UHPLC-ESI-MS/MSView study →}.

These are plant- and processing-biochemistry roles and should not be read as human pharmacology — the phytochemistry explains why tian ma must be prepared to be potent, not what the molecule does as a medicine.

Prevalence in Nature

Gastrodin is essentially a single-source molecule. Unlike most phenolics — which turn up in trace amounts across many plants — gastrodin is, for practical purposes, the marker of Gastrodia elata and is not a meaningful constituent of common food or medicinal plants. Within tian ma it is the dominant standardised active, quantified in every quality survey ^{1,12Reference 1Wu YN et al. · 2023ReviewGastrodia elata Bl.: A Comprehensive Review of Its Traditional Use, Botany, Phytochemistry, Pharmacology, and PharmacokineticsView study →Reference 12Li Y et al. · 2019Quality Evaluation of Gastrodia Elata Tubers Based on HPLC Fingerprint Analyses and Quantitative Analysis of Multi-Components by Single MarkerView study →}. Reported content varies widely with origin, wild-vs-cultivated status and processing; HPLC quality surveys put gastrodin at roughly 0.35–1.34% of dry weight ^{12Reference 12Li Y et al. · 2019Quality Evaluation of Gastrodia Elata Tubers Based on HPLC Fingerprint Analyses and Quantitative Analysis of Multi-Components by Single MarkerView study →}, and the Chinese Pharmacopoeia sets a minimum combined gastrodin + 4-hydroxybenzyl alcohol content as a quality floor for the crude drug ^{1Reference 1Wu YN et al. · 2023ReviewGastrodia elata Bl.: A Comprehensive Review of Its Traditional Use, Botany, Phytochemistry, Pharmacology, and PharmacokineticsView study →}.

Major Natural Sources

Source	Plant part	Reported content
Gastrodia (Gastrodia elata, tian ma)	dried rhizome	~0.35–1.34% dry weight (wide origin/processing variation) 12Reference 12Li Y et al. · 2019Quality Evaluation of Gastrodia Elata Tubers Based on HPLC Fingerprint Analyses and Quantitative Analysis of Multi-Components by Single MarkerView study →

Only Gastrodia is a quantitatively meaningful source; occasional trace reports in other orchids are qualitative and tracked for a later pass.

Discovery & Synthesis

Gastrodin’s modern story is a Chinese-pharmaceutical one. Its identity was established when Chinese researchers isolated and characterised it from Gastrodia elata in the late 1970s, naming the glucoside “tian ma su” and pinning tian ma’s central activity to it; a total synthesis followed shortly after, and because the glucoside is straightforward to make, gastrodin is now manufactured synthetically at scale rather than extracted, supplying the injectable and oral gastrodin products used across China ^{1,3Reference 1Wu YN et al. · 2023ReviewGastrodia elata Bl.: A Comprehensive Review of Its Traditional Use, Botany, Phytochemistry, Pharmacology, and PharmacokineticsView study →Reference 3Dai Y et al. · 2024Gastrodin, a Promising Natural Small Molecule for the Treatment of Central Nervous System Disorders, and Its Recent Progress in Synthesis, Pharmacology and PharmacokineticsView study →}. Reviews of gastrodin chemistry document a range of synthetic and biotransformation routes to the molecule and to derivatives aimed at improving its delivery ^{3Reference 3Dai Y et al. · 2024Gastrodin, a Promising Natural Small Molecule for the Treatment of Central Nervous System Disorders, and Its Recent Progress in Synthesis, Pharmacology and PharmacokineticsView study →}. Commercial gastrodin is therefore, like many marker compounds, largely a made molecule, even though its clinical rationale is wholly botanical.

Patents: not yet researched.

Toxicity & Safety

Gastrodin carries a low flag. It is a well-tolerated, water-soluble phenolic glucoside with decades of clinical use in China as an injectable and oral drug, and its preclinical toxicology is reassuring: acute studies report no mortality or overt toxicity in mice at oral or intravenous doses up to ~5,000 mg/kg, and repeat-dose studies in mice and dogs showed no adverse histopathology at doses far above the therapeutic range ^{2,3Reference 2Liu Y et al. · 2018ReviewA Review on Central Nervous System Effects of GastrodinView study →Reference 3Dai Y et al. · 2024Gastrodin, a Promising Natural Small Molecule for the Treatment of Central Nervous System Disorders, and Its Recent Progress in Synthesis, Pharmacology and PharmacokineticsView study →}. The related water extract of Gastrodia elata was non-genotoxic (negative Ames, chromosome-aberration and micronucleus tests) and produced no adverse effects in a 28-day oral toxicity study at up to ~8,000 mg/kg/day ^{14Reference 14Lu KH et al. · 2020Safety evaluation of water extract of Gastrodia elata Blume: Genotoxicity and 28-day oral toxicity studiesView study →}.

The honest limits are those of a molecule whose human safety data come from Chinese clinical practice rather than Western trials. Post-marketing reports of the injection describe occasional adverse reactions — most often skin (rash), gastrointestinal upset and nervous-system complaints such as dizziness, numbness, fatigue or transient memory changes — generally mild and reversible; injectable use also carries the usual small risk of hypersensitivity reactions ^{10Reference 10Lai Y et al. · 2022ObservationalClinical and economic analysis of Gastrodin injection for dizziness or vertigo: a retrospective cohort study based on electronic health records in ChinaView study →}. Because gastrodin’s central action runs partly through GABAergic and monoaminergic pathways, a theoretical additive effect with sedatives, anticonvulsants or other CNS-active drugs is worth flagging at medicinal doses, though it is not quantified. As always, the exposure that matters clinically is the registered drug or whole tian ma preparation, not a purified dietary isolate.

Safety at a Glance

✅ Low / no toxicity

• Low intrinsic toxicity. No mortality in mice up to ~5,000 mg/kg; non-genotoxic whole-herb extract; clean 28-day oral toxicity — consistent with decades of clinical use ^{2,3,14Reference 2Liu Y et al. · 2018ReviewA Review on Central Nervous System Effects of GastrodinView study →Reference 3Dai Y et al. · 2024Gastrodin, a Promising Natural Small Molecule for the Treatment of Central Nervous System Disorders, and Its Recent Progress in Synthesis, Pharmacology and PharmacokineticsView study →Reference 14Lu KH et al. · 2020Safety evaluation of water extract of Gastrodia elata Blume: Genotoxicity and 28-day oral toxicity studiesView study →}.
• Established clinical tolerability (in China). The gastrodin injection has a long track record in vertigo and headache with generally low adverse-reaction rates ^{10Reference 10Lai Y et al. · 2022ObservationalClinical and economic analysis of Gastrodin injection for dizziness or vertigo: a retrospective cohort study based on electronic health records in ChinaView study →}.
• Injection-related reactions. Post-marketing reports note occasional rash, GI upset and nervous-system complaints (dizziness, numbness, fatigue), plus the usual small hypersensitivity risk of any injectable ^{10Reference 10Lai Y et al. · 2022ObservationalClinical and economic analysis of Gastrodin injection for dizziness or vertigo: a retrospective cohort study based on electronic health records in ChinaView study →}.
• CNS-drug interactions untested. A theoretical additive effect with sedatives/anticonvulsants/monoaminergic drugs at medicinal — not dietary — quantities; no formal human interaction data.

Pregnancy/lactation is a per-herb / per-supplement decision and is not adjudicated on this molecule page; no dedicated reproductive dataset exists for the isolate, and no verdict is issued here.

Dosage

There is no independent Western supplement dose established for isolated gastrodin. Its real dosing is Chinese-pharmaceutical, and every figure below is a research or registered-drug dose, not a personal recommendation:

Where the route is injection, no oral-supplement equivalent is meaningful, and oral gastrodin is complicated by rapid conversion to its aglycone ^{3,4Reference 3Dai Y et al. · 2024Gastrodin, a Promising Natural Small Molecule for the Treatment of Central Nervous System Disorders, and Its Recent Progress in Synthesis, Pharmacology and PharmacokineticsView study →Reference 4Lin LC et al. · 2008AnimalPharmacokinetics of gastrodin and its metabolite p-hydroxybenzyl alcohol in rat blood, brain and bile by microdialysis coupled to LC-MS/MSView study →}. These are doses studied in research or used as a registered drug in China — not a self-dosing guide.

References

1. Wu YN, Wen SH, Zhang W, Yu SS, Yang K, Liu D, Zhao CB, Sun J (2023). Gastrodia elata Bl.: A Comprehensive Review of Its Traditional Use, Botany, Phytochemistry, Pharmacology, and Pharmacokinetics. Evidence-Based Complementary and Alternative Medicine. https://pubmed.ncbi.nlm.nih.gov/37114145/
2. Liu Y, Gao J, Peng M, Meng H, Ma H, Cai P, Xu Y, Zhao Q, Si G (2018). A Review on Central Nervous System Effects of Gastrodin. Frontiers in Pharmacology. https://pubmed.ncbi.nlm.nih.gov/29456504/
3. Dai Y, Ban W, Yang Z (2024). Gastrodin, a Promising Natural Small Molecule for the Treatment of Central Nervous System Disorders, and Its Recent Progress in Synthesis, Pharmacology and Pharmacokinetics. International Journal of Molecular Sciences. https://pubmed.ncbi.nlm.nih.gov/39273485/
4. Lin LC, Chen YF, Lee WC, Wu YT, Tsai TH (2008). Pharmacokinetics of gastrodin and its metabolite p-hydroxybenzyl alcohol in rat blood, brain and bile by microdialysis coupled to LC-MS/MS. Journal of Pharmaceutical and Biomedical Analysis. https://pubmed.ncbi.nlm.nih.gov/18757149/
5. An SJ, Park SK, Hwang IK, Choi SY, Kim SK, Kwon OS, Jung SJ, Baek NI, Lee HY, Won MH, Kang TC (2003). Gastrodin decreases immunoreactivities of gamma-aminobutyric acid shunt enzymes in the hippocampus of seizure-sensitive gerbils. Journal of Neuroscience Research. https://pubmed.ncbi.nlm.nih.gov/12548709/
6. Chen WC, Lai YS, Lin SH, Lu KH (2016). Anti-depressant effects of Gastrodia elata Blume and its compounds gastrodin and 4-hydroxybenzyl alcohol, via the monoaminergic system and neuronal cytoskeletal remodeling. Journal of Ethnopharmacology. https://pubmed.ncbi.nlm.nih.gov/26899441/
7. Ma C, Zhu C, Zhang Y, Yu M, Song Y, Chong Y, Yang Y, Zhu C, Jiang Y, Wang C, Cheng S, Jia K, Yu G, Li J, Tang Z (2024). Gastrodin alleviates NTG-induced migraine-like pain via inhibiting succinate/HIF-1α/TRPM2 signaling pathway in trigeminal ganglion. Phytomedicine. https://pubmed.ncbi.nlm.nih.gov/38241917/
8. Zhou X, Shao J, Xie X, Xu Y, Shao T, Jin Z (2022). Effectiveness of gastrodin for migraine: A meta-analysis. Frontiers in Neurology. https://pubmed.ncbi.nlm.nih.gov/36090869/
9. Yan Y, Zhang YL, Jin XL, Liao X, Gong X, Chen WJ, Wei JJ, Fan XM, Piao JZ, Fu GJ, Guo CL (2021). [Systematic review and Meta-analysis of efficacy and safety of gastrodin in treatment of tension-type headache]. Zhongguo Zhong Yao Za Zhi (China Journal of Chinese Materia Medica). https://pubmed.ncbi.nlm.nih.gov/34581069/
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