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A group of Chinese herbalists, led by Dr Chao, have developed a herbal drink based on a 130-year-old family recipe to help combat stress and its negative impact on health.

Dr Chao and his research team claim they discovered that Dr Chao's family’s herbal drink could be used to reduce the symptoms of stress by regulating the immune system and the brain’s central nervous system.

According to a company statement, the family’s herbal formula improves blood capillary circulation, which in turn regulates high blood pressure and reduces feelings of depression, stress and worry.

In 2008, under the guidance of the American National Food Laboratory, the herbal drink has been made available in the US, where the beverage maker US Panda Foods & Beverages Inc hopes to help consumers reduce stress without any side effects.

Dr Chao’s Herbal Drink has been certified by the American National Food Laboratory to be sugar-free, calorie-free, caffeine-free, and contain no preservative and other addictives.

The 100% natural herbal drink can be consumed by people of all ages, children and adults, including those whose intake of sugar is restricted, said the company.