Viva Herba Pvt. Ltd. Supplies Chi Green Tea for Weight Loss. Viva Herba Pvt. Ltd. Offers herbal products formulations. Chi Green Tea for Weight Loss is based on scientifically effective ingredients that help to lose weight and keep it off. Chi Green Tea for Weight Loss consists of three fat-burning supplements: ultimate green tea, ener-chi cafe and ener-chi sport. The ultimate green tea of this chi tea is a concentrated extract that uses 50 pounds of premium quality green tea leaves per pound of product. The ener-chi collection consists of two natural energy elixirs filled with fatigue-blasting vitamins and herbal extracts.