Pill Identification by Imprints: RX 505 Home Pill Identification by Imprints: RX 505 1 result ACYCLOVIR 800 MG TABLET Side 1: RX 505 Color: White Side 2: Shape: Oval Other Popular Drug Imprint 100 ER GILEAD 4331 NP 2 GAS-X ES logo and 30 GP MYLAN 3404 ZC55 ZC 03 USL 10 L994 West-ward 210 93 5292 ZGNX 50 mg EP 119 D2/850 logo and 343 L490 L257 3431 93 292 PAR 867 M 120 LAN L008 D3 or P 54 942 031 C 54 STO 125 logo and 069 CP114 E NPR LE 250 G443 5mg CN 500 A IL E21 OP 703