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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
Most Wormwood studies are mechanism or observational rather than RCTs that measure a clinical effect — keep findings provisional.
Most evidence is from medium-quality randomised trials published 2006–2010 with a typical study size of 40 participants.
Based on 3 studies · 2 RCTs · 60 total participants
Confidence
LowBy outcome
Wormwood has an evidence score of 3/10 — emerging evidence based on 3 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.
The commonly studied dose of Wormwood is Trial preparations used roughly 1.5-2.25g/day dried wormwood (divided); culinary/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.
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Last reviewed June 2026 · evidence from 3 studies · how we score
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.
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.
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Trial preparations used roughly 1.5-2.25g/day dried wormwood (divided); culinary/bitter doses are much lower. No validated general-use dose
Can be taken without food
| Form | Type |
|---|---|
| 💊Standardized low-thujone extract | Recommended |
| 💊Dried herb | Alternative |
| 💧Bitter tincture | Alternative |
Prefer preparations with controlled/low thujone content.
Minimum: 2 weeks
Optimal: 8 weeks
Cycling: Use short courses (e.g. weeks) rather than continuous long-term high-dose use to limit thujone exposure.
Note: Pre-meal bitter; keep doses and duration limited due to thujone.
Dose-response data unavailable. The current published research for Wormwood does not provide sufficient dose-specific outcome data to generate reliable dose-response curves.
Refer to the Dosage & Timing section above for recommended dose ranges based on available evidence.
Allowed steroid tapering with sustained symptom improvement in a small double-blind Crohn's study.
Traditional appetite/digestion stimulation via bitterness; limited modern trial confirmation.
Contains thujone, a convulsant monoterpene; excessive or prolonged high-dose use carries neurological risk.
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.
Theoretical CNS interaction via thujone's neuroactivity; use caution.
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
Ginger is a better-evidenced digestive aid that pairs with wormwood's bitter-tonic action.
Layered digestive support, with ginger carrying the safer evidence base.
Chamomile adds gentle anti-inflammatory and carminative digestive support (note: both are Asteraceae, so allergy-aware).
Complementary digestive/anti-inflammatory support.
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. The most commonly reported side effects are GI upset / nausea, neurological effects at high doses (restlessness, tremor, seizures). 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.
Prebiotic fiber that selectively feeds Bifidobacteria and Lactobacilli, producing short-chain fatty acids for gut health and immunity.
Because trials used wormwood to taper steroids, any change to inflammatory therapy should be physician-supervised, not self-directed.