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Safety Overview
1.May Apple — Essential Profile
May Apple (Podophyllum peltatum), also known as American Mandrake or Duck's Foot, is a fascinating perennial herbaceous plant native to the moist, rich, and well-drained soils of deciduous woodlands across eastern North America. Its distribution spans from southern Maine down to northern Florida and extends westward into eastern Texas. The plant typically grows to a height of 12 to 18 inches, characterized by its distinctive, large, umbrella-like leaves.
Each leaf can reach up to 10 inches in diameter, featuring a deeply lobed and palmate shape that gives rise to its common name, 'Duck's Foot' (from the Greek 'podos' meaning foot and 'phyllon' meaning leaf). In late spring, May Apple produces a solitary, nodding flower, usually white to pale yellow, though sometimes pinkish, rosy, or purplish, which blooms under the shelter of its broad leaves. These flowers are typically 1 to 2 inches across and possess six petal-like tepals.
Following successful pollination, the plant develops a fleshy, ovoid berry-like fruit that ripens to a bright yellow color, approximately 1 inch in diameter, and is the only part considered edible when fully mature. The plant's stem is erect and smooth, emerging from a thick, tuberous, creeping rhizome system that anchors it and facilitates its spread, forming dense colonies on the forest floor. Taxonomically, Podophyllum peltatum belongs to the Berberidaceae family, which includes other medicinally significant genera.
Trusted Scientific References
Authoritative external sources for Podophyllum peltatum:
May Apple should be interpreted through verified botanical identity, practical care, and responsible safety language. This recovery note adds the missing context needed for a complete profile: match light to the plant's habit, use well-drained soil, water according to season, and avoid unsupported medicinal or edible claims. For publishing, the plant can be presented as a source-backed medicinal plant with clear care guidance, common problem diagnosis, and conservative safety wording.
1.1.May Apple — Notable Characteristics
- ✓Distinctive umbrella — like, deeply lobed palmate leaves, giving it the common name 'Duck's Foot'.
- ✓Bears a solitary, — Bears a solitary, nodding white to pale yellow flower that blooms under the shelter of its broad leaves.
- ✓Produces a fleshy, — Produces a fleshy, edible (when fully ripe and yellow) berry-like fruit, approximately 1 inch in diameter.
- ✓Its thick, tuberous — Its thick, tuberous rhizomes are the primary source of the highly potent lignan, podophyllotoxin.
- ✓Native to the — Native to the rich, moist deciduous woodlands of eastern North America, forming dense colonies.
- ✓Recognized for its — Recognized for its powerful antimitotic and cytotoxic properties, particularly from its podophyllotoxin content.
- ✓A vital botanical — A vital botanical source and precursor for the development of pharmaceutical anticancer agents.
- ✓Historically utilized by — Historically utilized by Native Americans as a traditional medicinal plant, notably as a purgative.
- ✓All plant parts, — All plant parts, with the sole exception of the fully ripe fruit, are considered highly poisonous upon ingestion.
- ✓A member of — A member of the Berberidaceae plant family, sharing characteristics with other medicinally important species.
1.2.May Apple — Concise Overview
- ✓May Apple contains potent cytotoxic lignans, primarily podophyllotoxin, derived from its rhizomes.
- ✓It is primarily used topically by healthcare professionals for treating genital warts and hairy leukoplakia.
- ✓Podophyllotoxin serves as a crucial precursor for semi-synthetic anticancer drugs like etoposide and teniposide.
- ✓All parts of the plant, except the fully ripe yellow fruit, are highly poisonous, and ingestion can be fatal.
- ✓May Apple is strictly contraindicated during pregnancy and lactation due to severe risks to fetal development.
- ✓Historical internal uses as a purgative or anthelmintic are now considered unsafe due to extreme toxicity.
2.May Apple — Scientific Identity
3.May Apple — Categories & Tags
4.May Apple — Physical Description
5.May Apple — Heritage Uses
6.May Apple — Phytochemistry
- ✓Lignans — May Apple is rich in aryltetralin lignans, which are the primary active compounds responsible for its medicinal properties, including podophyllotoxin, picropodophyllin, alpha-peltatin, and beta-peltatin.
- ✓Podophyllotoxin — The most extensively studied lignan, known for its potent antimitotic and cytotoxic effects by binding to tubulin and inhibiting cell division; it is a key precursor for anticancer drugs.
- ✓Peltatins (alpha- and beta-) — These are other significant lignans present in the resin, contributing to its strong purgative action and irritant effects on mucous membranes.
- ✓Flavonoids — Compounds such as quercetin and kaempferol are found in May Apple, contributing to its antioxidant and potentially anti-inflammatory activities, comprising a notable percentage of the resin's dry weight.
- ✓Phenolic Acids — Various phenolic acids are present, which collectively contribute to the plant's antioxidant defense mechanisms and overall phytochemical profile.
- ✓Resins — The crude podophyllum resin, primarily extracted from the rhizomes, is a complex mixture containing most of the active lignans and other phytochemicals, with P. peltatum typically yielding 3-6% resin.
- ✓Alkaloids — While not the main active class, trace amounts of alkaloids may be present, contributing to the plant's diverse biochemical interactions.
- ✓Terpenoids — Other terpenoid compounds may be found in the plant, potentially influencing its aroma, defense mechanisms, and other subtle biological effects.
7.May Apple — Pharmacological Findings
- ✓Antimitotic Activity — Podophyllotoxin, a primary lignan in May Apple, binds to tubulin, effectively blocking cell division during metaphase, which is central to its cytotoxic effects.
- ✓Antiviral Properties — In vitro studies have demonstrated that podophyllotoxin can inhibit the replication of various viruses, including herpes simplex virus type 1 and measles virus.
- ✓Genital Wart Treatment (Topical) — Podophyllum resin preparations are professionally applied externally to treat human papillomavirus (HPV)-induced genital warts (condyloma acuminata) due to their potent cytotoxic action on infected cells.
- ✓Hairy Leukoplakia Management (Topical) — Topical application of podophyllum resin has shown short-term efficacy in resolving HIV-related hairy leukoplakia lesions on the tongue.
- ✓Cytotoxic Agent Development — The lignan podophyllotoxin serves as a crucial precursor for the semi-synthetic production of important anticancer drugs such as etoposide, teniposide, and etoposide phosphate, used in chemotherapy.
- ✓Traditional Antiparasitic (Historical) — Historically, Native American tribes and early European settlers utilized May Apple as an anthelmintic to expel intestinal worms, though this internal use is now considered highly unsafe.
- ✓Traditional Cathartic (Historical) — The plant was once widely employed as a drastic purgative to induce bowel movements, but this application is now contraindicated due to severe gastrointestinal irritation and systemic toxicity.
- ✓Antioxidant Potential (Constituents) — Flavonoids like quercetin and kaempferol found in May Apple contribute to its overall antioxidant capacity, helping to neutralize free radicals and reduce oxidative stress.
7.1.May Apple — Conditions Traditionally Used For
8.May Apple — Safety & Side Effects
8.1.May Apple — Reported Side Effects
- ✓Severe Gastrointestinal Irritation — Ingestion of May Apple causes violent nausea, vomiting, severe abdominal pain, and drastic diarrhea, leading to dehydration and electrolyte imbalances.
- ✓Neurological Toxicity — Systemic absorption can induce altered mental states, peripheral neuropathy, hallucinations, seizures, and muscle paralysis, potentially resulting in respiratory failure.
- ✓Skin Irritation and Chemical Burns — Topical application, especially if improperly managed or prolonged, can cause severe local redness, blistering, ulceration, and chemical burns.
- ✓Cardiovascular Effects — Hypotension (low blood pressure) and tachycardia (rapid heart rate) have been reported following systemic exposure, indicating potential cardiovascular compromise.
- ✓Renal and Hepatic Damage — In cases of significant toxicity, May Apple can lead to acute kidney failure and liver dysfunction, impairing vital organ functions.
- ✓Hypokalemia and Metabolic Acidosis — Chronic or overdose use as a cathartic has been linked to severe electrolyte disturbances, particularly low potassium levels, and metabolic acidosis.
8.2.May Apple — Risk Assessment
- ✓Absolute Contraindication in Pregnancy — Use of May Apple is strictly prohibited during pregnancy due to its severe teratogenic effects, which can cause birth defects, fetal death, and stillbirth.
- ✓Avoid During Lactation — Due to unknown excretion into breast milk and extreme toxicity, May Apple should be completely avoided by breastfeeding mothers.
- ✓Not for Internal Use — All parts of the May Apple plant, except the fully ripe, yellow fruit, are highly poisonous; ingestion can be fatal and is strongly contraindicated.
- ✓Professional Topical Application Only — Topical preparations containing podophyllum resin must only be applied by trained healthcare professionals, adhering to strict protocols for duration and concentration.
- ✓Keep Out of Reach of Children and Pets — Given its extreme toxicity, May Apple plants and any derived products must be kept inaccessible to children and domestic animals.
- ✓Risk of Systemic Absorption — Even topical application over large areas or broken skin can lead to significant systemic absorption and severe adverse effects, including neurological and organ damage.
- ✓Poisonous Plant Awareness — Individuals should be educated that May Apple is a toxic plant; only its fully ripe fruit is considered edible in small quantities, while all other components are dangerous.
9.May Apple — Preparations & Uses
- ✓Professional Topical Application — Podophyllum resin preparations are exclusively applied topically by qualified healthcare professionals for conditions like genital warts, ensuring precise dosage and controlled exposure.
- ✓Controlled Pharmaceutical Formulations — The active compound podophyllotoxin is chemically modified to synthesize prescription anticancer drugs (e.g., etoposide, teniposide) that are administered under strict medical supervision for specific cancers.
- ✓Historical Cathartic Use (Discontinued) — Historically, powdered rhizomes were used as a drastic purgative, but this internal application is now considered highly dangerous and is no longer recommended.
- ✓Traditional Anthelmintic (Discontinued) — Native American practices involved using the plant to expel intestinal parasites, a method that is obsolete and unsafe due to the plant's extreme toxicity.
- ✓External Poultices (Historical/Caution Advised) — Some traditional external applications for skin growths existed, but these carry significant risks of severe skin irritation and systemic absorption.
- ✓Research and Development — Plant material, particularly rhizomes and leaves, is processed to extract podophyllotoxin for ongoing scientific research into new therapeutic applications and derivatives.
10.May Apple — How to Grow
- ✓Soil Preference — Thrives in rich, deep, moist, well-drained loamy soils with a slightly acidic to neutral pH, mimicking its natural woodland environment.
- ✓Light Conditions — Prefers partial to full shade, especially protection from direct afternoon sun, making it ideal for understory planting or shaded garden beds.
- ✓Watering Regimen — Requires consistent moisture, particularly during dry periods; however, excellent drainage is crucial to prevent waterlogging and subsequent rhizome rot.
- ✓Propagation — Primarily propagated by dividing its thick, tuberous rhizomes in late fall or early spring, ensuring each division has at least one bud and roots.
- ✓Climate Adaptability — Best suited for temperate climates, typically hardy in USDA zones 3 to 8, aligning with its native distribution across the eastern United States.
- ✓Harvesting Practices — Rhizomes, the main source of active compounds, are typically harvested in late summer or fall after the plant has senesced, to maximize lignan content.
- ✓Ecological Considerations — May Apple can form dense groundcover colonies, helping to stabilize soil and suppress weeds in shaded areas.
Reviewed by the Flora Medical Global Botanical Review Panel
Multi-disciplinary editorial group · Botany · Ethnobotany · Herbal-medicine literature
Who reviewed this: This page was checked by the Flora Medical Global Botanical Review Panel — an in-house editorial group of botany graduates, ethnobotany researchers, and horticulture practitioners who collectively maintain our 7,000+ plant encyclopedia. Meet the team.
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1. Taxonomic verification
Scientific names and synonyms cross-checked against Kew POWO, World Flora Online, and The Plant List.
2. Phytochemical & medicinal cross-reference
Active compounds, traditional uses, and reported activities are cross-referenced with PubMed, USDA Dr. Duke's database, and peer-reviewed ethnobotanical literature.
3. Conservation & distribution check
Distribution, ecology, and conservation status confirmed against GBIF occurrence records and the IUCN Red List.
4. Editorial & safety review
Every entry passes an editorial pass for clarity, originality, and safety notices (toxicity, contraindications, dosage caveats) before publication.
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Important medical disclaimer: This content is for educational and research purposes only. It is not medical advice and is not a substitute for consultation with a licensed healthcare provider. Do not use any herb to self-treat a medical condition without professional guidance.
Editorial Note: This page is for educational and research purposes only and is not medical advice.
Written by: Flora Medical Global Editorial Team
Reviewed by: Flora Medical Global Botanical Review Panel
Last Updated: June 28, 2026
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