Betagen History Betagen Co., Ltd. was established by Mr. Sompong Attasakulchai in 1991 under the name Thai Advance Food (1991) Co., Ltd. to produce and to distribute pasteurized drinking yogurt and pasteurized yogurt branded “Betagen”. The company’s R&D team has been researched, has been developed and has been selected the best raw material to produce the products that have the active lactobacillus casei which is a strong probiotic that bring benefit to human health with good taste. The company distributes the product through modern trades and the Betagen representative countrywide.