This site provides a database full of information leading to a wide variety of doctors and pharmacies. No medicine is sold in this site, but you will find links to site that do sell these according to the medicine that you select.
To have access to this database, first you will need to become a member of this site and pay a fee as well. After this, you will be able to search for information according to the medicine that you select by selecting one from the list provided in the homepage of this site. If not, you can always enter the Med List section where you can find medicine according to the condition or disease. Every medicine that you select will have a link to and online store that is offering it and also basic information, about its uses, side effects, how to take it, precautions, storage and much more useful information about the drug. 
