1956 DAIDO Pharmaceutical Corporation established. Our company has roots in a one-man business. Our founder was a salesman who sold medicine under the centuries-old Japanese business model of visiting homes and leaving medicine on a “use first, pay later” basis. Every home used to have a medicine box filled with cold medicine, digestive medicine, and other remedies. A family would use any of the medicine when needed and pay for it when the salesman next came around.