Pill Identification by Imprints: GP400 Home Pill Identification by Imprints: GP400 5 results MAGNESIUM OXIDE 400 MG TABLET Side 1: GP400 Color: White Side 2: Shape: Round MAGNESIUM OXIDE 400 MG TABLET Side 1: GP400 Color: White Side 2: Shape: Round MAGNESIUM OXIDE 400 MG TABLET Side 1: GP400 Color: White Side 2: Shape: Round MAGNESIUM-OXIDE 400 MG TABLET Side 1: GP400 Color: White Side 2: Shape: Round MAGNESIUM-OXIDE 400 MG TABLET Side 1: GP400 Color: White Side 2: Shape: Round Other Popular Drug Imprint WATSON 607 350 N004 TCL 011 G 222 U35 BP 648 V 1 5382 AZ 40 WATSON 862 MYLAN 216 ZE 43 54 814 GILEAD 4331 93 5513 US 10 8119 A 45 logo and 255 GX CE2 POML BL 325 GG 2 4 9 10 XL 66 3RP E 707 93 7350 V 23 TL 218 M 27 T582 EFF logo and 012 2089 V CZ WATSON 783 300 XL MYLAN 5428