Why Choose Healthspans High Strength Green Tea? They make their tablets using a high grade green tea extract of premium quality, specially formulated to provide high levels of polyphenols and catechin. Each tablet is standardised to provide 323mg of polyphenols and 155mg of catechin epigallocatechin gallate (EGCG). They also add chromium and vitamin B2 to support your energy levels, macronutrient metabolism, reduce tiredness and fatigue and protect your cells from oxidative stress. This formulation also maintains your skin in the best possible condition and helps keep your blood glucose levels in line. What is Green Tea? Tea has come a long way in 3,000 years! But one thing has remained true there are thought to be many health benefits associated with ingesting green tea in particular.