Question 1

How does Tectona grandis work for diabetes?

Accepted Answer

Tectona grandis contains bioactive compounds including lapachol, tectol, and flavonoids that may help regulate blood glucose levels. These compounds are thought to enhance insulin sensitivity and potentially support pancreatic beta-cell function. The antidiabetic effects are attributed to antioxidant properties that reduce oxidative stress associated with diabetes complications. However, human clinical trials are limited, and the exact mechanism requires further research (Evidence Level C, preliminary studies).

Question 2

Does Tectona grandis interact with diabetes medications?

Accepted Answer

Tectona grandis may potentially interact with antidiabetic medications, as both work to lower blood glucose levels. Combining them could cause additive effects leading to hypoglycemia (dangerously low blood sugar). Additionally, due to potential effects on liver enzymes, teak preparations may alter the metabolism of various pharmaceutical drugs. Patients taking insulin, metformin, or other glucose-lowering medications should consult a healthcare provider before using Tectona grandis products (Evidence Level C).

Question 3

What is the recommended dosage of Tectona grandis bark?

Accepted Answer

The traditional Ayurvedic dosage for Tectona grandis bark is 5-10 grams prepared as a decoction (boiled extract), typically taken once or twice daily. For hair care, teak seed oil is applied topically to the scalp and massaged gently. Standardized commercial preparations may have different dosing recommendations. Due to limited clinical safety data, users should start with lower doses and avoid exceeding traditional recommendations without medical supervision (Traditional use, Evidence Level C).

Question 4

Is Tectona grandis safe during pregnancy and breastfeeding?

Accepted Answer

Tectona grandis is considered unsafe during pregnancy and should be avoided. The active compounds, including lapachol and related naphthoquinones, have been associated with potential uterine stimulation and may pose risks to fetal development. There is insufficient safety data for breastfeeding women, so use during lactation is also not recommended. Women who are pregnant, planning pregnancy, or breastfeeding should consult a qualified healthcare practitioner before considering any teak-based preparations (Evidence Level D, theoretical concerns).

Question 5

What are the benefits of Tectona grandis for hair growth?

Accepted Answer

Tectona grandis (teak) has been traditionally used in Ayurveda for promoting hair growth and treating scalp conditions. The seed oil is believed to strengthen hair follicles, reduce dandruff, and improve overall scalp health due to its antimicrobial and anti-inflammatory properties. Some traditional practitioners claim it helps prevent premature graying and hair loss. While these uses are well-documented in Ayurvedic texts, modern clinical studies validating these specific hair benefits are limited (Traditional use, Evidence Level C).

Tectona grandis

Sources & Citations

Summary

Background

Traditional uses

Active compounds

Mechanism of action

Clinical evidence

Safety & adverse effects

Evidence summary

PubMed sources

Government sources