As you can imagine, there are cultural differences when dealing with mental health matters here in Japan. One big difference is the protocol around the legal use of psychotropic medications. In order to prevent potential problems for new students when they get to Japan, here are guidelines and Q & A regarding psychotropic medications. Note that certain types of psychotropic medication cannot legally be transported into Japan, nor can they be prescribed for you in Japan.
医薬品等の輸入手続き／関東信越厚生局 (Kanto-Shinetsu Regional Bureau of Health and Welfare)
Download the MS Word file "procedures of bringing medicines into Japan"
For more information, directly contact the Ministry of Health, Labor and Welfare: email@example.com or call country code +81-48-601-1336.