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Artemisia Absinthium
A bitter digestive herb best known from absinthe. Two small Crohn's-disease trials found a steroid-sparing, TNF-alpha-lowering effect — genuinely interesting but tiny and unreplicated. Major safety caveat: it contains thujone, a neurotoxic monoterpene; avoid in pregnancy and seizure disorders.
What the evidence says
Wormwood doesn't have enough studies with structured effect-size data yet to pool a verdict. Browse the studies below for individual findings.
Most evidence is from high-quality meta-analyses and randomised trials published 2004–2026.
Based on 22 studies · 1 meta-analysis · 14 RCTs
Confidence
Moderate confidenceBy outcome
An Emerging 4.5 reflects two small, same-group Crohn's RCTs showing steroid-sparing, TNF-alpha-lowering effects — promising but tiny, unreplicated, and offset by a real thujone safety ceiling.
16 randomised trials
every one checked individually
Every randomised or controlled trial of Wormwood indexed in PubMed, not a hand-picked subset. Meta-analyses and systematic reviews are deliberately excluded from this count: most of them cover many compounds at once, so counting them would inflate it.
PubMed · as of Jul 2026
11 trials ongoing or recruiting · 31 completed on ClinicalTrials.gov
3 of the completed trials have posted results
Registered trials show research momentum for Wormwood, not proof of effect — a registration is a plan, and posted results are sponsor-reported, not peer-reviewed. They are never counted toward the evidence rating above.
Browse these trials on ClinicalTrials.govClinicalTrials.gov · as of Oct 2026
Wormwood (Artemisia absinthium) is an intensely bitter herb historically used to stimulate digestion and as the signature botanical of absinthe. Its bitter compounds (absinthin) are thought to stimulate digestive secretions, the classic 'bitter tonic' rationale.
The most notable modern evidence comes from two small German trials in Crohn's disease, where a wormwood preparation allowed steroid tapering and reduced the inflammatory cytokine TNF-alpha — a steroid-sparing signal.
These results are promising but come from very small samples (20-40 patients), have not been independently replicated, and involved a specific herbal preparation.
The dominant safety issue is thujone, a monoterpene in wormwood that is neurotoxic (convulsant) at high doses — the toxicity historically blamed for 'absinthism.' Modern thujone limits in food/beverages exist for this reason.
Wormwood should be regarded as an emerging digestive/anti-inflammatory herb with a real but small evidence base and a meaningful safety ceiling.
Wormwood extract lowered serum TNF-alpha in Crohn's patients, paralleling in-vitro reports of cytokine suppression — a plausible anti-inflammatory mechanism.
Bitter principles (absinthin) are traditionally thought to stimulate gastric and digestive secretions ('bitter tonic').
How Wormwood works — from molecular targets to health outcomes. Click an edge to see supporting research.This visualization is in beta — pathways are being refined and expanded.
Avoid entirely — thujone exposure and traditional uterine-stimulant reputation.
Avoid — thujone is a convulsant and can lower seizure threshold.
Use caution; thujone metabolites are a theoretical concern.
Avoid due to cross-reactivity risk.
Thujone can lower seizure threshold and may oppose anticonvulsant control; avoid in people with seizure disorders.
Because trials used wormwood to taper steroids, any change to inflammatory therapy should be physician-supervised, not self-directed.
Tip: Reduce dose; take with a small amount of food
Tip: Do not exceed recommended doses; avoid prolonged high-dose use and high-thujone products
Wormwood has an evidence score of 4.5/10 — emerging evidence based on 22 indexed studies. A bitter digestive herb best known from absinthe. Two small Crohn's-disease trials found a steroid-sparing, TNF-alpha-lowering effect — genuinely interesting but tiny and unreplicated. Major safety caveat: it contains thujone, a neurotoxic monoterpene; avoid in pregnancy and seizure disorders. Representative study: PMID 17240130.
Dosing for Wormwood: The cited Crohn's disease trial used a herbal blend containing wormwood herb at 3 x 500 mg a day for 10 weeks. Culinary and bitter doses are much lower. No validated general-use dose. Individual needs vary — start at the lower end of the range and adjust based on how you respond.
The best time to take Wormwood is between meals. It can be taken on an empty stomach. Bitters are traditionally taken shortly before meals; thujone exposure should be minimized, so avoid high doses and prolonged use.
Wormwood should be used with caution — talk to a healthcare provider before taking it. Reported side effects include neurological effects at high doses (restlessness, tremor, seizures), GI upset / nausea. How often they occur is not established for all of them. Use caution if any of these apply to you: Pregnancy and breastfeeding (thujone; emmenagogue/abortifacient tradition); Seizure disorders / epilepsy (thujone is a convulsant); Allergy to Asteraceae (ragweed, chamomile, marigold) plants.
Ginger Extract
Likely helpsGingerols and shogaols reduce nausea, accelerate gastric emptying, and provide systemic anti-inflammatory benefits.
Psyllium Husk
Likely helpsGel-forming soluble fiber that lowers LDL cholesterol, regulates blood sugar, and promotes digestive regularity.
Aged Garlic Extract
Likely helpsOdorless garlic extract with evidence for blood pressure and cardiovascular markers, and one trial reporting milder colds and flu.
Curcumin
Probably helpsTurmeric's active compound that modulates NF-kB inflammatory pathways — supports mood, joint health, and post-exercise recovery.
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Reviewed by Dr. Baher Al Hakim · Last reviewed June 2026 · evidence from 24 studies · how we score · editorial policy
This information is for educational purposes only. It is not a substitute for professional medical advice. Always consult a qualified healthcare provider before starting, stopping, or changing any supplement or medication.
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