http://www.fda.gov/cder/drug/infopage/penG_doxy/default.htm
Center for Drug Evaluation and Research, U.S. Food and Drug Administration
This drug information sheet from FDA's Center for Drug Evaluation and Research provides recommendations for the antibiotics doxycycline and penicillin G procaine for treatment of inhalational anthrax. Answers to questions consumers may have about both drugs are provided, as well as links to other sources of information about anthrax.