Question 1

How does Brucea javanica work against malaria and cancer cells?

Accepted Answer

Brucea javanica contains bioactive quassinoids, particularly bruceosides and brusatol, which are responsible for its therapeutic effects. For malaria, these compounds interfere with Plasmodium parasite metabolism and disrupt mitochondrial function. For anti-tumor activity, brusatol has demonstrated the ability to inhibit the Nrf2 signaling pathway and induce apoptosis in various cancer cell lines. The quassinoids also exhibit antiamoebic and antibacterial properties, which support traditional use for dysentery. Evidence level: C (preliminary clinical and preclinical studies).

Question 2

What drug interactions are associated with Brucea javanica?

Accepted Answer

Brucea javanica carries significant hepatotoxicity risk and should not be combined with other liver-affecting medications, including acetaminophen, isoniazid, or certain antifungals. Concurrent use with antimalarial drugs like chloroquine or artemisinin derivatives has not been adequately studied, so caution is warranted. Patients undergoing chemotherapy should avoid this herb without oncologist supervision, as brusatol may compound cytotoxic effects. Limited pharmacokinetic data exists for specific drug interactions. Evidence level: C.

Question 3

What is the traditional dosage for Brucea javanica seeds?

Accepted Answer

Traditional Chinese Medicine prescribes 10-15 seeds of Brucea javanica (Ya Dan Zi) taken in capsule form three times daily for adults. The seeds are extremely bitter and can cause significant gastrointestinal irritation if chewed or taken raw, so encapsulation is essential. Treatment duration is typically limited to 7-10 consecutive days due to cumulative toxicity concerns. This dosage is based on traditional use rather than standardized clinical trials. Evidence level: Traditional.

Question 4

Is Brucea javanica safe during pregnancy and breastfeeding?

Accepted Answer

Brucea javanica is contraindicated during pregnancy and should be strictly avoided. The quassinoid compounds, particularly brusatol, have demonstrated abortifacient properties and may stimulate uterine contractions. Preclinical studies have shown embryotoxic effects. Breastfeeding women should also avoid this herb due to insufficient safety data and potential transfer of toxic compounds through breast milk. Women of childbearing age should use reliable contraception during treatment. Evidence level: C.

Question 5

What side effects can occur from taking Brucea javanica?

Accepted Answer

Common side effects include gastrointestinal symptoms such as nausea, vomiting, abdominal cramping, and diarrhea, which occur due to the intensely bitter quassinoids irritating the gastric mucosa. More serious adverse effects include hepatotoxicity, which may manifest as elevated liver enzymes, jaundice, or hepatic inflammation with prolonged or excessive use. Patients with pre-existing liver disease or gastrointestinal disorders should not use this herb. Treatment should be discontinued if severe symptoms develop. Evidence level: C.

Brucea javanica

Sources & Citations

Crossopteryx febrifuga

Ailanthus altissima

Afzelia Africana

Summary

Background

Traditional uses

Active compounds

Mechanism of action

Clinical evidence

Drug interactions

Evidence summary

PubMed sources

Government sources