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 K4 LIDOCAINE PATCH 5% 392 PAXIL WATSON 630 or WATSON 632 466 G4 MF 1 MP 101 FH 160 ZA08 G650 G 70 M 253 NA 500 OR L010 14/10 AHI 2 SJ 646 ALG 263 5225 logo and 96 CPC ML 94 ZC45 81/40 G 3511 ZGNX 20 mg SZ 787 669 MCR 104 EP 114 MSD 106 ALG 265 LASER 360 D3 or P G 30 PIX CDT 252