FamilyDoctor.org is a good Web site for getting general medical information. You can check symptoms, drug interactions, and much more at this great-looking site. Here is the description of the American Academy of Family Physicians, which is responsible for the site:
This Web site is operated by the American Academy of Family Physicians (AAFP), a national medical organization representing more than 100,300 family physicians, family practice residents and medical students. All of the information on this site has been written and reviewed by physicians and patient education professionals at the AAFP. Visit the AAFP Web site to learn more about the AAFP.