0001021408-03-004208 424B3 1 20030313 AMERISOURCEBERGEN CORP 0001140859 5122 233079390 DE 0930 424B3 33 333-68278 03602065 1300 MORRIS DRIVE, SUITE 100 CHESTERBROOK PA 19087-5594 6107277000 1300 MORRIS DRIVE, SUITE 100 CHESTERBROOK PA 19087-5594 AMERISOURCE HEALTH CORP/DE 0000855042 5122 232546940 DE 0930 424B3 33 333-68278-01 03602066 PO BOX 959 VALLEY FORGE PA 19482 6102964480 300 CHESTER FIELD PKWY MALVERN PA 19355 AHSC HOLDINGS CORP 19920325 ALCO HEALTH DISTRIBUTION CORP /DE/ 19920703 AMERISOURCE DISTRIBUTION CORP 19940811 424B3 1 d424b3.txt PROSPECTUS SUPPLEMENT DATED MARCH 13, 2003.