Consumer health resource center providing information on the types of antibiotics, treatment information, and common side effects. A number of natural products, penicillin for example, have been discovered that are antibiotics suitable for therapy. A free collection of articles about antibiotics published in The New York Times. Examins how the overuse antibiotics and bacteria can become resistant to them. This guide from Johns Hopkins University provides current information about using antibiotics for the diagnosis and treatment of infectious diseases.