PubMed-compiled information sheet
This sheet was compiled from PubMed (NIH) abstracts using AI assistance. Every factual claim is cited to a real PubMed article (see the source list). It has not yet been human-reviewed — confirm with a healthcare provider before use.
Compiled from 30 PubMed articles · model: gemma4:31b
Summary
Background
Traditional uses
Active compounds
Mechanism of action
Clinical evidence
A case report showed a 15% reduction in pleural and nodal manifestations after 6 weeks of integrative treatment with Helleborus niger and Viscum album extracts, with the patient surviving 56 months [PMID:29312767]
In vitro studies demonstrate cytotoxic activity and apoptosis induction in HL-60 leukemia, A549 lung adenocarcinoma, and SBC-3 small-cell lung cancer cells [PMID:39260588, PMID:33502658, PMID:19090543]
Safety & adverse effects
Evidence summary
PubMed sources
- 1.PMID: 39260588 (2025) — Steroidal constituents in the whole plants of Helleborus niger and their cytotoxic activity in vitro. · Phytochemistry
- 2.PMID: 23796521 (2013) — Sepal phenolic profile during Helleborus niger flower development. · Journal of plant physiology
- 3.PMID: 31113420 (2019) — Preclinical evaluation of safety and potential of black hellebore extracts for cancer treatment. · BMC complementary and alternative medicine
- 4.PMID: 28867859 (2017) — Pharmacognostical and Phytochemical Studies of Helleborus niger L Root. · Ancient science of life
- 5.PMID: 25446603 (2015) — Differential cytotoxic properties of Helleborus niger L. on tumour and immunocompetent cells.