The benefits of herbal tea have been known through old remedies. Herbal teas have been used for centuries both as a tasty drink and as important remedies.

At the age of 64, Mr. Nguyen Van Tu still dedicates his time in the laboratory. In an interview with Tri Thuc Tre, Tu said there were three products marking the highlights in his career, namely Number 1 energy drink, Zero Degrees Green Tea, and Dr Thanh Herbal Tea.