My doctor gave me Prosad DS tablet. The pharmacy changed it for Re Methylphen Tablet RIV. I do not find details for either drugs. Could you help? ## I was able to retrieve some information on Prosed/DS, which you can take a look at by following the link below... Once you link to the drug page, be sure to take a look at the active ingredients associated with Prosed/DS, which are listed right underneath the drug title. Also underneath the drug title is a link called Review the Drug Article, if you would like to further research Prosed/DS. As far as locating the newer name Re Methylphen that the pharmacy changed it to, I was only able to retrieve information on a similar more established name, Methylphenidate. To further address the contents of this drug, please follow the link below... If...