Ayurveda is the branch of traditional medicine which was localized to India and nearby countries, and similar to Traditional Chinese Medicine in that the 'medicines' used traditionally conists of mostly herbs but also some other things that may be bioactive.
The term Ayurveda is derived from 'Ayus' (life) and 'Ved' (knowledge) as was to refer to accumulated knowledge and practise of sustaining and improving human life and the body.
The section devoted to herbs, alchemy, and chemistry is called Rasayan, and is what Ayurvedic supplementation belongs to.
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Scientific Research on Ayurveda
Some combination Therapries (blends of herbs) that have been used in Ayurveda include:
Liv-52 (Capparis spinosa, Cichorium intybus, Solanum nigrum, Terminalia arjuna, Cassia occidentalis, Tamarix gallica, Achillea millefolium) in a 4:4:2:2:1:1:1 ratio 
- Bhattacharya SK, Bhattacharya A, Chakrabarti A. Adaptogenic activity of Siotone, a polyherbal formulation of Ayurvedic rasayanas. Indian J Exp Biol. (2000)
- Bhattacharya SK, Satyan KS, Chakrabarti A. Effect of Trasina, an Ayurvedic herbal formulation, on pancreatic islet superoxide dismutase activity in hyperglycaemic rats. Indian J Exp Biol. (1997)
- Jeyaprakash K, Chinnaswamy P. Effect of spirulina and Liv-52 on cadmium induced toxicity in albino rats. Indian J Exp Biol. (2005)