Question 1

How does Tephrosia purpurea work in the body?

Accepted Answer

Tephrosia purpurea contains bioactive compounds including rutin, tephrosin, flavonoids, and tannins that contribute to its medicinal effects. The flavonoids and rutin provide hepatoprotective activity through antioxidant mechanisms, helping protect liver cells from oxidative stress. Tephrosin demonstrates anti-inflammatory properties, while the herb's bitter principles stimulate digestive secretions. Rotenone, another constituent, has insecticidal properties but raises safety concerns at higher doses. Evidence level: C (preclinical studies support these mechanisms, though human trials remain limited).

Question 2

What are the drug interactions of Tephrosia purpurea?

Accepted Answer

Tephrosia purpurea may interact with medications metabolized by the liver due to its effects on hepatic function. The presence of rotenone and other bioactive compounds could potentially alter the metabolism of drugs processed through hepatic pathways. Patients taking hepatotoxic medications, immunosuppressants, or drugs requiring precise therapeutic dosing should exercise caution. Those on diabetes or blood pressure medications should monitor for additive effects. Always consult a healthcare provider before combining with prescription medications. Evidence level: C.

Question 3

What is the recommended dosage for Tephrosia purpurea?

Accepted Answer

Traditional Ayurvedic practice recommends Tephrosia purpurea root powder at 3-5 grams taken twice daily, or as a root decoction prepared from dried roots. The herb is typically consumed with water or honey. Standardized extracts may have different dosing requirements based on concentration. Due to rotenone content and potential dose-dependent liver effects, users should adhere strictly to recommended amounts and avoid prolonged use without medical supervision. Evidence level: Traditional/C.

Question 4

Is Tephrosia purpurea safe during pregnancy and breastfeeding?

Accepted Answer

Tephrosia purpurea is considered unsafe during pregnancy and should be strictly avoided. The herb contains rotenone, a compound with potential toxicity, and has traditional emmenagogue properties that may stimulate uterine contractions, posing a risk of miscarriage. There is insufficient safety data for breastfeeding women, so nursing mothers should also avoid this herb. Women who are pregnant, planning pregnancy, or breastfeeding should consult a qualified healthcare provider before using any herbal supplements.

Question 5

What is Tephrosia purpurea used for in Ayurvedic medicine?

Accepted Answer

Tephrosia purpurea, known as 'Sharapunkha' in Ayurveda, is traditionally used for liver disorders, spleen enlargement, respiratory conditions including asthma, skin diseases, and jaundice. The root is the primary medicinal part, valued for its bitter and astringent properties. In Ayurvedic classification, it functions as a liver tonic and blood purifier. Modern preclinical research supports hepatoprotective and anti-inflammatory effects, though robust human clinical trials remain limited. Evidence level: C/Traditional use.

Question 6

What are the side effects of Tephrosia purpurea?

Accepted Answer

Common side effects of Tephrosia purpurea include gastrointestinal upset such as nausea, vomiting, or diarrhea, particularly when taken in excessive doses or on an empty stomach. More concerning is the potential for liver toxicity with prolonged or high-dose use due to rotenone content. Individuals with pre-existing liver disease should avoid this herb entirely. Users should discontinue immediately if experiencing jaundice, abdominal pain, or unusual fatigue, and seek medical attention. Evidence level: C/Traditional.

Tephrosia purpurea

Sources & Citations

Calculate a safe dose of Tephrosia purpurea

Frequently asked questions

Summary

Background

Traditional uses

Active compounds

Mechanism of action

Clinical evidence

Drug interactions

Evidence summary

PubMed sources

Government sources