A concentrated extract is used in this product (not just simple bulk herb powder). Extract enhances the potency, efficacy, and health benefits significantly.
Charaka Samhita Chikitsa Sthana
Sushruta Samhita Uttar Tantra
Ashtanga Sangraha Uttar Tantra
Ayurvedic Pharmacopeia of India
Balladin, D. A., O. Headley, I. Chang-Yen and D. R. McGaw. 1997. Extraction and evaluation of the main pungent principles of solar dried West Indian ginger (Zingiber officinale Roscoe) rhizome. Renewable Energy 12(2): 125-130.
Govindarajan, V. 1982. Ginger-chemistry technology and quality evaluation: Part-I CRC. Critical Reviews Food Sci. Nutr. 17: 1-96.