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 378 10 00 AC40 44 546 WW 763 logo and H9 650 V 5 M 577 T535 11 10 ARICEPT CL65 TEVA 7592 WRF 2 A25 J 246 BAYER BAYER WRF 5 M U11 252 SS-1 CP 25 F6 LP332 27 35 80 34 160 mg M122 Theo-24 100mg L554 212 or 279 M133 20 MYLAN 2264 INCY VP030 VP 077 GS XJG