Plantaginaceae · leaf
Foxglove
Digitalis purpurea
Historical source of digitalis. In this catalog only as a toxicity warning next to hawthorn-class heart mappings.
Safety first
Contains digoxin-class cardiac glycosides. A named drug exists because this plant is not a tea. Yellow vision, nausea, and arrhythmia after a 'heart tonic' are an emergency. Toxicity warning entry.
This entry exists so you do not use the plant casually. It is not a treatment suggestion.
Tradition vs trials
Traditional record. Withering's 1785 foxglove account is medical history, not a foraging permit.
Trial literature. Digoxin is a licensed drug with a narrow therapeutic index. The leaf is not interchangeable with a tablet.
Practical ranges
Educational ranges — not a prescription. Culinary use is not an extract.
leaf
No educational DIY range
Pharmacopeial digitalis history / licensed digoxin labels — Educational range only — not a prescription. A licensed clinician individualizes product, dose, and duration.
Pregnancy, nursing, children
- Pregnancy. Avoid (plant). Digoxin in pregnancy is a clinician drug decision, not this page.
- Nursing. Insufficient reliable data; avoid unless a clinician directs otherwise.
- Children. Insufficient reliable data; avoid unless a clinician directs otherwise.
Contraindications
- any unsupervised use
- foraging
- stacking with hawthorn as a 'heart tea'
Key interactions
- diuretics / quinidine / amiodarone / licorice-hypokalemia · contraindicated
Hypokalemia potentiates glycoside toxicity. This is a poison monograph.