Teavigo was developed for its potency and purity, with a minimum of 94% EGCg to maximize healthful benefits, and minimize impurities. Other green tea extracts have a much lower concentration of EGCg. Substantial documentation is available confirming the safety and efficacy of Teavigo.

Teavigo is caffeine-free, and also free of any herbicide or pesticide residue. In addition, Teavigo was self-affirmed GRAS in 2005 by a panel of qualified, independent experts. There is no bitter aftertaste associated with Teavigo, as with some other green tea extracts, and it is water soluble.