King Vajiravudh granted the honorary surname of Osathanugrah, which means "provider of medicine" in Thai, to the founding family after one of their products helped end an outbreak of dysentery in the Thai army.
[4] The market share of Osotspa increased along with total sales, and grew to 100 million bottles by 1989.
M-150 was also introduced in powdered form, with sales reaching 10 million sachets per month.
[6] As of 2010, Osotspa has offices in Innsbruck, Larnaca, Santiago de Compostela, Harlow, Essex and Torrance, California.
[7][8] The company was listed on the Stock Exchange of Thailand (SET) in October 2018, helping boost the Osathanugrah family's net worth to $3 billion.