On much of the packaging of drugs sold in pharmacies, the efficacy and ingredients are only stated in Japanese, so it may not be clear to the customer which drug to buy.
At the URL shown below, you can search for the efficacy of specific drugs by entering the drug’s name.
In addition, if you check the names of the main ingredients of a drug that you use or intend to use, and search for these on this site, you will be able to find out the drugs available in Japan that include those ingredients.
Edited by NTT TownPage
(Created June 2015)