False Hellebore ☠️ (Veratrum viride) Herbal Monograph

What Is False Hellebore?

False hellebore is a tall perennial of wet meadows and moist woods, with large pleated leaves and a branching spike of green flowers. The plant is poisonous. Its steroidal alkaloids slow the heart and drop blood pressure within an hour of eating it ^{10Reference 10Chandler CM · 2014Medicinal history of North American Veratrum}.

Veratrum viride grows in two separate populations, one in eastern and one in western North America. In the west it reaches from Alaska and the Yukon through British Columbia and Alberta to California ^{11Reference 11McNeal DW Jr · 2002Veratrum and Veratrum virideView study →}. It was once an important source of blood-pressure drugs, and its relative, California false hellebore, led to the discovery of cyclopamine and the hedgehog signalling pathway ^{10Reference 10Chandler CM · 2014Medicinal history of North American Veratrum}.

Most poisonings happen in spring, when the young shoots are gathered by mistake for wild leeks (ramps) ^{1,2,7Reference 1Anwar M et al. · 2018Hikers poisoned: Veratrum steroidal alkaloid toxicity following ingestion of foraged Veratrum parviflorumReference 2Seale JT et al. · 2022Veratrum parviflorum poisoning: identification of steroidal alkaloids in patient blood and breast milkReference 7Trebach J et al. · 2022Detectable digoxin concentrations in 3 patients with ramps misadventure}.

Identification & Lookalikes

The diagnostic combination: large, broadly oval leaves that are strongly pleated along deep parallel veins, like an accordion, and clasp a stout, erect, leafy stem. The leaves grow alternately up the stem ^{11Reference 11McNeal DW Jr · 2002Veratrum and Veratrum virideView study →}. The flowers are green to yellowish green, in a large branched cluster at the top of the stem, and appear after the leaves ^{11Reference 11McNeal DW Jr · 2002Veratrum and Veratrum virideView study →}.

Plant confused with it	How it differs
Skunk cabbage (Lysichiton americanus)	Large leaves grow in a cluster from the base; there is no leafy erect stem. The leaves are not strongly pleated. A bright yellow spathe appears in late winter or spring, with a strong skunky smell, in swamps and wet woods ^{13Reference 13Thompson SA · 2000Lysichiton and Lysichiton americanus (Araceae)View study →}
False Solomon’s-seal (Maianthemum racemosum, M. stellatum)	A smaller plant, with leaves that are not pleated, a cluster of small white flowers and red berries. Its leaves can clasp the stem, especially in western plants, so clasping alone does not separate it ^{14Reference 14LaFrankie JV · 2002Maianthemum racemosum and MView study →}
Ramps and wild leeks (Allium tricoccum)	The commonest cause of poisoning. Veratrum shoots have been eaten as ramps in several case reports ^{1,2,7Reference 1Anwar M et al. · 2018Hikers poisoned: Veratrum steroidal alkaloid toxicity following ingestion of foraged Veratrum parviflorumReference 2Seale JT et al. · 2022Veratrum parviflorum poisoning: identification of steroidal alkaloids in patient blood and breast milkReference 7Trebach J et al. · 2022Detectable digoxin concentrations in 3 patients with ramps misadventure}

Young shoots are the dangerous stage. Veratrum is hard to tell from edible plants when it is young or not in flower ^{10Reference 10Chandler CM · 2014Medicinal history of North American Veratrum}, and emerging shoots can resemble Maianthemum, Streptopus and other spring greens. The tell is the strong pleating of the leaves. Do not judge the plant on size alone at the tight-shoot stage.

Botany

False hellebore (Veratrum viride Aiton) is a stout perennial herb in the Melanthiaceae. It grows from a short, thick rhizome with fleshy roots, and its erect, hollow stem reaches 0.5–2 m ^{11Reference 11McNeal DW Jr · 2002Veratrum and Veratrum virideView study →}.

The leaves are oval to elliptic, 15–35 cm long and 8–20 cm wide, and get smaller up the stem. Their bases form closed sheaths around the stem ^{11Reference 11McNeal DW Jr · 2002Veratrum and Veratrum virideView study →}.

The flowers grow in a branched cluster 30–70 cm long. Each flower has six deep green to yellowish tepals, 5–12 mm long, with finely toothed edges ^{11Reference 11McNeal DW Jr · 2002Veratrum and Veratrum virideView study →}. The fruit is an oblong capsule 2–3 cm long, holding flat, broadly winged seeds ^{11Reference 11McNeal DW Jr · 2002Veratrum and Veratrum virideView study →}.

The species has two varieties, one for each population. Eastern plants (var. viride) have flower-cluster branches that ascend or spread. Western plants (var. eschscholzianum) have branches that often droop, with upright flowers ^{11Reference 11McNeal DW Jr · 2002Veratrum and Veratrum virideView study →}.

False hellebore belongs to the same family as the death camas. Despite its name it is not related to true hellebore, Helleborus, which is in the buttercup family. Its Eurasian counterpart is white hellebore, V. album ^{11Reference 11McNeal DW Jr · 2002Veratrum and Veratrum virideView study →}.

Distribution

False hellebore grows in two populations separated by the width of the continent. Continental glaciation split them, and they have developed apart since ^{11Reference 11McNeal DW Jr · 2002Veratrum and Veratrum virideView study →}.

The western variety grows in Alaska, the Yukon, the Northwest Territories, British Columbia and Alberta, and south through Washington, Idaho, Montana and Oregon to California. It grows in moist meadows and openings in coniferous forest, from sea level to 2,500 m ^{11Reference 11McNeal DW Jr · 2002Veratrum and Veratrum virideView study →}.

The eastern variety grows from Newfoundland and Labrador, Quebec and New Brunswick south through New England and the Appalachians to Georgia and Tennessee. It grows in moist clearings and shaded woodland, from sea level to 1,600 m ^{11Reference 11McNeal DW Jr · 2002Veratrum and Veratrum virideView study →}. It is considered a pasture weed around Quebec and in New England ^{11Reference 11McNeal DW Jr · 2002Veratrum and Veratrum virideView study →}.

Phytochemistry

Veratrum contains two groups of steroidal alkaloids with different effects ^{10Reference 10Chandler CM · 2014Medicinal history of North American Veratrum}.

The first group are ester alkaloids that act on the heart and blood pressure. In V. viride the main ones are esters of germine, named germidine and germitrine, which were found to be the principal blood-pressure-lowering alkaloids of the plant ^{10Reference 10Chandler CM · 2014Medicinal history of North American Veratrum}.

Later work added more germine esters (neogermitrine, germbudine and isogermbudine), and in 1952 protoveratrines A and B and neoprotoveratrine were also identified in V. viride ^{10Reference 10Chandler CM · 2014Medicinal history of North American Veratrum}. In dog tests the germine triesters such as germitrine were the most potent of these, followed by the protoveratrines ^{10Reference 10Chandler CM · 2014Medicinal history of North American Veratrum}.

Veratridine and cevadine, the best-known ester alkaloids of the older “veratrine”, came from sabadilla seed, not from V. viride ^{10Reference 10Chandler CM · 2014Medicinal history of North American Veratrum}. Neither has been confirmed in this species by chemical analysis.

The second group are the jerveratrum alkaloids, which include jervine and cyclopamine. They cause birth defects by blocking hedgehog signalling in the embryo ^{10Reference 10Chandler CM · 2014Medicinal history of North American Veratrum}. Jervine was first isolated from V. viride ^{10Reference 10Chandler CM · 2014Medicinal history of North American Veratrum}. Rubijervine, pseudojervine and the parent base germine have also been isolated from V. viride ^{10Reference 10Chandler CM · 2014Medicinal history of North American Veratrum}. Cyclopamine is best known from California false hellebore (V. californicum) and has also been found in the eastern V. parviflorum ^{2,10Reference 2Seale JT et al. · 2022Veratrum parviflorum poisoning: identification of steroidal alkaloids in patient blood and breast milkReference 10Chandler CM · 2014Medicinal history of North American Veratrum}.

A 2010 analysis of V. viride eaten in a poisoning case identified jervine, rubijervine, solanidine and a veratramine-type alkaloid in the plant extract ^{15Reference 15Bechtel LK et al. · 2010Ingestion of false hellebore plants can cross-react with a digoxin clinical chemistry assay}.

The type and amount of alkaloid vary with the species, the plant part and the season ^{11Reference 11McNeal DW Jr · 2002Veratrum and Veratrum virideView study →}.

Constituent Summary

Grouped by class · 4 compounds

Steroidal Alkaloid4 compounds4 with data

Steroidal AlkaloidGermidine, germitrineGermine esters; the main blood-pressure-lowering alkaloids ^{10Reference 10Chandler CM · 2014Medicinal history of North American Veratrum}

Steroidal AlkaloidProtoveratrine AEster alkaloid; once sold as a blood-pressure drug ^{10Reference 10Chandler CM · 2014Medicinal history of North American Veratrum}

Steroidal AlkaloidJervineJerveratrum alkaloid; causes birth defects

Steroidal AlkaloidCyclopamineJerveratrum alkaloid; hedgehog-pathway blocker, best known from V. californicum

Toxicology

Class of poison. Steroidal alkaloids that hold sodium channels open, plus a separate group that causes birth defects.

Acute mechanism. The germine esters and protoveratrines bind to receptor site 2 on the voltage-gated sodium channel and keep it open ^{10Reference 10Chandler CM · 2014Medicinal history of North American Veratrum}. Studies of veratridine, a related ester alkaloid, show that this stops the channel from inactivating ^{3Reference 3He W et al. · 2018AnimalSympathetic mechanisms in an animal model of vasovagal syncope}. In the heart this sets off the Bezold–Jarisch reflex: nerve signals from the left ventricle travel up the vagus nerve and cause slow heart rate, low blood pressure and shallow breathing ^{1,10Reference 1Anwar M et al. · 2018Hikers poisoned: Veratrum steroidal alkaloid toxicity following ingestion of foraged Veratrum parviflorumReference 10Chandler CM · 2014Medicinal history of North American Veratrum}.

Birth-defect mechanism. Cyclopamine binds directly to Smoothened, a protein in the hedgehog signalling pathway, and blocks the signal. Jervine binds the same site more weakly. In the early embryo this causes cyclopia and holoprosencephaly ^{10Reference 10Chandler CM · 2014Medicinal history of North American Veratrum}.

Course. Symptoms usually start 30 minutes to an hour after eating, and sometimes take up to 4 hours ^{10Reference 10Chandler CM · 2014Medicinal history of North American Veratrum}. Vomiting comes first and is reported in almost every case. Low blood pressure, slow heart rate, diarrhoea and abdominal pain follow, sometimes with burning in the ears, nose or throat, tingling, blurred vision or loss of consciousness ^{2,10Reference 2Seale JT et al. · 2022Veratrum parviflorum poisoning: identification of steroidal alkaloids in patient blood and breast milkReference 10Chandler CM · 2014Medicinal history of North American Veratrum}.

In one case a 51-year-old man arrived at hospital 45 minutes after eating a soup of boiled “leeks”. He was vomiting and drowsy, with a heart rate of 30 and a systolic blood pressure of 40, and needed atropine, fluids and a dopamine infusion. His slow heart rate and heart block lasted about 48 hours ^{5Reference 5Prince LA · 2000Prolonged cardiotoxicity from poison lilly (Veratrum viride)}.

Antidote. There is no specific antidote, but atropine counters the reflex and is the first-line drug for the slow heart rate and low blood pressure ^{6,10Reference 6Jaffe AM et al. · 1990Poisoning due to ingestion of Veratrum viride (false hellebore)Reference 10Chandler CM · 2014Medicinal history of North American Veratrum}. Fluids, drugs to raise blood pressure and anti-sickness drugs are used alongside it ^{2,6Reference 2Seale JT et al. · 2022Veratrum parviflorum poisoning: identification of steroidal alkaloids in patient blood and breast milkReference 6Jaffe AM et al. · 1990Poisoning due to ingestion of Veratrum viride (false hellebore)}. With atropine, patients usually recover fully within 1–2 days. Untreated, symptoms have lasted up to 15 days ^{10Reference 10Chandler CM · 2014Medicinal history of North American Veratrum}.

A false digoxin reading. Three adults poisoned by a ramps lookalike had detectable digoxin in their blood although none had taken it. Veratrum alkaloids can cross-react with digoxin blood tests and give a falsely raised result ^{7Reference 7Trebach J et al. · 2022Detectable digoxin concentrations in 3 patients with ramps misadventure}. Extracts of V. viride reacted with one digoxin test kit in the laboratory, but did not bind the antibody fragments used to treat digoxin poisoning ^{15Reference 15Bechtel LK et al. · 2010Ingestion of false hellebore plants can cross-react with a digoxin clinical chemistry assay}.

Fatalities. Without prompt treatment, Veratrum poisoning can be fatal ^{10Reference 10Chandler CM · 2014Medicinal history of North American Veratrum}. The modern North American case reports describe recovery with supportive care, including a six-person series, two hikers poisoned by V. parviflorum, an eight-person series from ramp foraging, and the first reported case from V. californicum ^{1,2,5,6,12Reference 1Anwar M et al. · 2018Hikers poisoned: Veratrum steroidal alkaloid toxicity following ingestion of foraged Veratrum parviflorumReference 2Seale JT et al. · 2022Veratrum parviflorum poisoning: identification of steroidal alkaloids in patient blood and breast milkReference 5Prince LA · 2000Prolonged cardiotoxicity from poison lilly (Veratrum viride)Reference 6Jaffe AM et al. · 1990Poisoning due to ingestion of Veratrum viride (false hellebore)Reference 12Roake C et al. · 2026A case of accidental Veratrum californicum (California false hellebore) toxicity}.

Traditional & Historical Use

Native American Medicine

In the west, peoples including the Bella Coola, Cowlitz, Kwakiutl, Okanagan, Quinault, Salishan, Shuswap and Thompson used false hellebore as a pain reliever, an antirheumatic, an emetic, a laxative and a poison. They also used it for colds and for blood, heart, bone and skin complaints ^{11Reference 11McNeal DW Jr · 2002Veratrum and Veratrum virideView study →}.

In the east, the Cherokee and Iroquois used it as an antirheumatic and pain reliever, and for colds, skin and bone complaints ^{11Reference 11McNeal DW Jr · 2002Veratrum and Veratrum virideView study →}. Some peoples of the north-east used the rhizome in a test of leadership: the man who could best withstand its vomiting was judged strong enough to lead ^{10Reference 10Chandler CM · 2014Medicinal history of North American Veratrum}.

Nineteenth- and Twentieth-Century Medicine

Colonial settlers soaked corn seed in an infusion of the plant to kill the birds that ate it ^{11Reference 11McNeal DW Jr · 2002Veratrum and Veratrum virideView study →}.

V. viride entered American medical writing in 1835. From the 1850s, a tincture of the rhizome sold as “Norwood’s Tincture” brought it into wider use for its effect on the heart and circulation ^{10Reference 10Chandler CM · 2014Medicinal history of North American Veratrum}. By the early twentieth century crude extracts had fallen out of favour because their strength varied, though a V. viride extract was still sold for eclampsia ^{10Reference 10Chandler CM · 2014Medicinal history of North American Veratrum}.

In the 1950s purified Veratrum alkaloids were sold as blood-pressure drugs. Germine esters from V. viride were marketed as Veriloid, Vergitryl and Vertavis, and protoveratrines A and B as Provell and Veralba ^{10Reference 10Chandler CM · 2014Medicinal history of North American Veratrum}. By 1973 more than a million prescriptions had been written for V. viride extracts ^{10Reference 10Chandler CM · 2014Medicinal history of North American Veratrum}.

The drugs had real limits. Their effect lasted less than 3 hours, the toxic dose was only about 30% above the working dose, and vomiting was part of how they worked. They were dropped when better-tolerated drugs such as methyldopa and diazoxide arrived ^{10Reference 10Chandler CM · 2014Medicinal history of North American Veratrum}.

The cyclopic lambs. In the late 1950s, sheep herders in the Idaho highlands saw an unusual number of lambs born with a single central eye. USDA researchers traced the defect to ewes grazing California false hellebore (V. californicum) around the 14th day of pregnancy ^{8,10Reference 8Binns W et al. · 1963A congenital cyclopian-type malformation in lambs induced by maternal ingestion of a range plant, Veratrum californicumReference 10Chandler CM · 2014Medicinal history of North American Veratrum}. Keeler and Binns then showed that cyclopamine, cycloposine and jervine were responsible ^{4,10Reference 4Keeler RF · 1968Teratogenic compounds of Veratrum californicum (Durand)Reference 10Chandler CM · 2014Medicinal history of North American Veratrum}.

Decades later, researchers found that cyclopamine blocks the Sonic hedgehog signalling pathway by binding Smoothened. That made it a tool for studying cancers driven by the pathway, such as basal cell carcinoma and medulloblastoma. Cyclopamine itself was never developed as a drug, but it opened the field that produced vismodegib, a synthetic hedgehog-pathway blocker approved for advanced basal cell carcinoma ^{10Reference 10Chandler CM · 2014Medicinal history of North American Veratrum}.

Safety & Pregnancy

Safety at a Glance

PoisonousOverdose risk

Fast-acting heart poisoning. Vomiting, then a very slow heart rate and low blood pressure, usually within the first hour ^{5,10Reference 5Prince LA · 2000Prolonged cardiotoxicity from poison lilly (Veratrum viride)Reference 10Chandler CM · 2014Medicinal history of North American Veratrum}.
Causes birth defects. Its jerveratrum alkaloids block hedgehog signalling in the embryo; its relative V. californicum caused the Idaho cyclopic lambs ^{8,10Reference 8Binns W et al. · 1963A congenital cyclopian-type malformation in lambs induced by maternal ingestion of a range plant, Veratrum californicumReference 10Chandler CM · 2014Medicinal history of North American Veratrum}.
Young shoots are mistaken for ramps and spring greens in repeated case reports ^{1,2,7Reference 1Anwar M et al. · 2018Hikers poisoned: Veratrum steroidal alkaloid toxicity following ingestion of foraged Veratrum parviflorumReference 2Seale JT et al. · 2022Veratrum parviflorum poisoning: identification of steroidal alkaloids in patient blood and breast milkReference 7Trebach J et al. · 2022Detectable digoxin concentrations in 3 patients with ramps misadventure}.
Atropine works well for the slow heart rate, and modern North American cases have recovered with supportive care ^{6,10Reference 6Jaffe AM et al. · 1990Poisoning due to ingestion of Veratrum viride (false hellebore)Reference 10Chandler CM · 2014Medicinal history of North American Veratrum}.
A false digoxin reading can appear on blood tests after Veratrum poisoning ^{7Reference 7Trebach J et al. · 2022Detectable digoxin concentrations in 3 patients with ramps misadventure}.
No safe internal dose exists.

Full Safety Detail

Prognosis. A heart rate of 30 and a systolic pressure of 40 look alarming, but they respond to atropine, and treated patients usually recover within 1–2 days ^{5,10Reference 5Prince LA · 2000Prolonged cardiotoxicity from poison lilly (Veratrum viride)Reference 10Chandler CM · 2014Medicinal history of North American Veratrum}. The danger is a severe illness needing intensive care, not a likely death, provided treatment comes quickly.

Identification. Nearly every documented poisoning is a spring-greens mistake. Strongly pleated leaves are the single character that separates Veratrum from ramps and false Solomon’s-seal.

Pregnancy. The birth-defect risk is specific and well established. In sheep the sensitive window is narrow and very early, around the 14th day of pregnancy, before many pregnancies are recognised ^{10Reference 10Chandler CM · 2014Medicinal history of North American Veratrum}.

Breastfeeding. After poisoning, Veratrum alkaloids have been found in breast milk ^{2Reference 2Seale JT et al. · 2022Veratrum parviflorum poisoning: identification of steroidal alkaloids in patient blood and breast milk}.

Pregnancy & Lactation

Avoid in pregnancy Avoid while breastfeeding

Avoid entirely, including external use. Veratrum carries jervine and related alkaloids that block Smoothened and the hedgehog signalling pathway. Malformations in exposed livestock embryos are how that pathway’s research began ^{4,8,10Reference 4Keeler RF · 1968Teratogenic compounds of Veratrum californicum (Durand)Reference 8Binns W et al. · 1963A congenital cyclopian-type malformation in lambs induced by maternal ingestion of a range plant, Veratrum californicumReference 10Chandler CM · 2014Medicinal history of North American Veratrum}.

References

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Seale JT, Carpenter JE, Eisenstat MD, et al. Veratrum parviflorum poisoning: identification of steroidal alkaloids in patient blood and breast milk. Clin Toxicol. 2022;60(12):1309–1317. PMID 36301078.
He W, Wang X, Liu S, et al. Sympathetic mechanisms in an animal model of vasovagal syncope. Clin Auton Res. 2018;28(3):333–340. PMID 29368225.
Keeler RF, Binns W. Teratogenic compounds of Veratrum californicum (Durand). V. Comparison of cyclopian effects of steroidal alkaloids from the plant and structurally related compounds from other sources. Teratology. 1968;1:5–10. PMID 5696817.
Prince LA, Stork CM. Prolonged cardiotoxicity from poison lilly (Veratrum viride). Vet Hum Toxicol. 2000;42(5):282–285. PMID 11003119.
Jaffe AM, Gephardt D, Courtemanche L. Poisoning due to ingestion of Veratrum viride (false hellebore). J Emerg Med. 1990;8(2):161–167. PMID 2362117.
Trebach J, Calleo V, Akbar S, Langston J, Filigenzi M, Hoffman RS. Detectable digoxin concentrations in 3 patients with ramps misadventure. Wilderness Environ Med. 2022;33(3):340–343. PMID 35691768.
Binns W, James LF, Shupe JL, Everett G. A congenital cyclopian-type malformation in lambs induced by maternal ingestion of a range plant, Veratrum californicum. Am J Vet Res. 1963;24:1164–1175. PMID 14081451.
Turner NJ. Food Plants of Interior First Peoples / Plant Technology of First Peoples in British Columbia.
Chandler CM, McDougal OM. Medicinal history of North American Veratrum. Phytochem Rev. 2014;13(3):671–694. PMID 25379034.
McNeal DW Jr, Shaw AD. Veratrum and Veratrum viride. In: Flora of North America Editorial Committee, eds. Flora of North America North of Mexico, vol. 26. 2002. http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=242102051
Roake C, Besmanos CG, Armenian P. A case of accidental Veratrum californicum (California false hellebore) toxicity. Wilderness Environ Med. 2026;37(1):106–109. PMID 40534571.
Thompson SA. Lysichiton and Lysichiton americanus (Araceae). In: Flora of North America Editorial Committee, eds. Flora of North America North of Mexico, vol. 22. 2000. http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=222000246
LaFrankie JV. Maianthemum racemosum and M. stellatum. In: Flora of North America Editorial Committee, eds. Flora of North America North of Mexico, vol. 26. 2002. http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=242101759
Bechtel LK, Lawrence DT, Haverstick D, Powers JS, Wyatt SA, Croley T, Holstege CP. Ingestion of false hellebore plants can cross-react with a digoxin clinical chemistry assay. Clin Toxicol. 2010;48(5):435–442. PMID 20586573.