Information on the effects of many drugs on breastfeeding is now just a click away. LactMed, a service of the National Library of Medicine, is a peer-reviewed and fully referenced database of drugs to which breastfeeding mothers may be exposed. Search by generic or brand name and quickly find information on a drug's effects in breastfeeding women. Among the data included are maternal and infant levels of drugs, possible effects on breastfed infants and on lactation, and alternate drugs to consider. Visit http://toxnet.nlm.nih.gov/cgi-bin/sis/htmlgen?LACT for more information and to search the database.