Question 1

How does Sophora tetraptera work for wound healing?

Accepted Answer

The medicinal activity of Sophora tetraptera is primarily attributed to quinolizidine alkaloids, specifically cytisine and matrine. These compounds exhibit antimicrobial and anti-inflammatory properties, which support the traditional topical use for wound healing and skin conditions. However, these same alkaloids act on the central nervous system, creating a narrow margin between therapeutic topical effects and systemic toxicity (Evidence Level C).

Question 2

Is Sophora tetraptera safe to use during pregnancy?

Accepted Answer

No, Sophora tetraptera is unsafe during pregnancy and breastfeeding. The plant contains potent quinolizidine alkaloids, such as cytisine, which are toxic and can cross the placenta. Ingestion may cause uterine stimulation or fetal harm. Due to the high risk of severe side effects like paralysis and the lack of safety data, pregnant women and children must not use this herb internally or externally (Evidence Level C/D).

Question 3

What is the safe dosage for Sophora tetraptera?

Accepted Answer

There is no safe internal dosage for Sophora tetraptera due to the presence of toxic alkaloids. Traditional Maori usage involved topical applications of bark preparations for skin conditions and wound healing. Internal consumption is considered poisonous and can induce nausea, paralysis, and respiratory failure. Consequently, usage is restricted to qualified practitioners for external application only (Evidence Level C/Traditional).

Question 4

Does Sophora tetraptera interact with any medications?

Accepted Answer

Specific clinical drug interaction studies for Sophora tetraptera are lacking (Evidence Level C). However, because it contains cytisine—a compound structurally similar to nicotine—it may theoretically interact with nicotine replacement therapies or medications affecting blood pressure and heart rate. Given the high toxicity of its alkaloid content, combining this herb with other drugs carries significant risk, and internal use is generally contraindicated.

Question 5

What are the traditional uses of Kowhai (Sophora tetraptera)?

Accepted Answer

Sophora tetraptera, also known as Kowhai, is traditionally used by Maori for treating skin conditions and promoting wound healing. The bark was typically prepared as a topical wash or poultice. Historical texts also mention its use for hair growth and paralysis, though these applications are less common today. Modern use focuses exclusively on external applications due to the plant's severe internal toxicity (Evidence Level C/Traditional).

Sophora Tetraptera

Sources & Citations

Ixbut

Balsam of Peru

Liquidambar orientalis

Summary

Background

Traditional uses

Active compounds

Mechanism of action

Clinical evidence

Safety & adverse effects

Evidence summary

PubMed sources

Government sources