Generic Medicine Day (Generikku Iyakuhin no Hi)

What Is Generic Medicine Day?

December 22 is "Generic Medicine Day," established by the Japan Generic Medicines Association based on a wordplay: "je (12) ne (2) rikku (22)" echoes "generic" in Japanese pronunciation. The day aims to promote the use of generic (off-patent) medicines and spread accurate knowledge about them.

What Are Generic Medicines?

After a brand-name (original) drug's patent expires—typically after 20–25 years—other manufacturers can produce and sell medicines with the same active ingredient, efficacy, and quality. Because development costs are much lower, generics can be sold for roughly 20–70% of the original drug's price.

The Safety and Quality of Generics

• Same active ingredient: The type, amount, route of administration, efficacy, and safety of the main ingredient are equivalent to the original drug
• Government-approved: Generics undergo review and approval by Japan's Ministry of Health, Labour and Welfare
• Bioequivalence testing: Tests confirm that the absorption speed and amount in the body are equivalent to the original drug
• Additives may differ: Color, shape, and taste can vary (worth noting if you have allergies)

Benefits of Using Generics

• Lower out-of-pocket costs: Patients can save roughly 30–70% on medication costs
• Reduced healthcare spending: Helps keep national medical costs sustainable
• Ask your doctor or pharmacist: Feel free to simply ask, "Can this be switched to a generic?"