Beth (Trillium erectum)

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15. Safety

Red flags first.

• Heavy bleeding is a symptom, and its cause has to be found. Heavy or irregular bleeding can come from fibroids, polyps, thyroid disease, bleeding disorders, anticoagulant medicines, pregnancy complications or cancer. Anyone with heavy, new or irregular bleeding, or bleeding after menopause, should have it investigated, and should consult a degree-qualified herbalist with competencies and adequate training in pharmacognosy before using beth root.
• Bleeding in pregnancy, or heavy bleeding during or after birth, is an emergency: call 000. Beth root has a practice record in the third stage of labour [11], and no herb replaces emergency obstetric care.
• Bleeding heavy enough to cause dizziness, fainting, breathlessness or soaking a pad or tampon every hour is also an emergency (000).

Evidence base. No clinical safety study, case report, case series or adverse-event report of beth root was found in PubMed or Europe PMC (searches in section 13). TGA checks on 30/09/2026: the current safety alerts list and a search of the TGA website for Trillium and beth root found no alert, recall or safety advisory about beth root; the only TGA records found were the two ARTG listings in section 12 [47]. The TGA Database of Adverse Event Notifications (DAEN) sits behind a terms-of-use page and an interactive report that our tools could not query, so it has not been searched and must be searched by hand (section 18). Every statement below is graded by the kind of evidence behind it.

Adverse effects.

• Gastrointestinal: large doses are emetic. Duke, citing the source he codes PHR: "In high doses emetic, emmenagogue, even promoting labor" [15]; Sayre calls it "emmenagogue and emetic" [16]. Duke notes that his entry is generic across Trillium species [15]. Grade: traditional.
• Constipation with long use: Trickey warns that "the tannin fraction should inspire caution and symptoms such as constipation may indicate adverse effects from tannins on the gut wall" [11]. Grade: theoretical.
• Local irritation: the rhizome is acrid and was used "as a local irritant in skin diseases" [8]; chewing it causes heat in the throat and salivation [8,10]. A review of toxic North American plants lists T. erectum with skin burns from the leaves [25]. Grade: traditional.
• Normal doses: Duke quotes the source he codes PH2: "Hazards and/or side effects not known for proper therapeutic dosages" [15]. Grade: expert opinion.

Toxicology. No acute, repeated-dose, genotoxicity or reproductive toxicity study of beth root was found. The cytotoxicity in section 14 is in cultured cells only.

Contraindications and cautions.

• Pregnancy: avoid except under the supervision of a practitioner trained for it. Hechtman lists "Bethroot, Trillium spp." in her table of herbs contraindicated in pregnancy, taken from Romm (2009), with American Herbal Products Association class 2b and "not categorised" in the Mills and Bone scheme [14]; Duke gives class 2b and says that "as an emmenagogue/uterotonic, should not be used by pregnant mothers" [15]; MediHerb advises professional supervision [13]. The tradition of use to hasten labour, its use in the third stage of labour [11] and the historical record of attempted abortion (section 11) point the same way [10,28,31]. Use in labour is for a practitioner trained in obstetric herbal care, working with the midwife or obstetric team, and never in place of emergency care. Grade: traditional and expert opinion; no study.
• Lactation: professional supervision [13]. Nothing is known about transfer into breast milk. Grade: precautionary expert opinion; no data.
• Surgery: MediHerb’s standard advice to stop 7 days before general anaesthesia [13]. Grade: precautionary class statement, not specific to this herb.

Herb–drug interactions. None documented. No case report, pharmacokinetic study or trial of an interaction with beth root was found. MediHerb refers readers to its own interaction chart, which was not among the sources read [13]. AIP comment (Medicine review): tannin-rich drugs can in theory reduce the absorption of drugs and minerals, including iron, taken at the same time. A woman with heavy bleeding is often taking oral iron, so beth root and iron or other mineral supplements are best taken at least two hours apart. This is a precaution drawn from the tannin content; no study of beth root supports or refutes it. Grade: theoretical. The listed capsules in section 12 also contain chaste tree and black cohosh, whose own cautions apply to those products.

Children and older people. No data. The current indications concern menstruating women.

Overdose. Vomiting is the expected effect (see above). No overdose case was found.

Regulatory safety actions. None found for beth root. It is not scheduled in the Poisons Standard [3] and is permitted as an active ingredient in listed medicines with no specific requirements [2]. No TGA safety alert about it was found on 30/09/2026, and neither ARTG public summary carries a warning that concerns beth root [47].