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 L274 SUN808 606 L217 SZ 76 667 11 36 ZA-43 E502 L U MYLAN 810 Cedax L18 PH 033 44-527 B854 E 215 FL 14/10 MYLAN QS 324 L187 M T11 V 1 AZ 267 54 662 ANZEMET 2410 V IP 193 L78 Z350 50 mg F 71 MP 513 GS MZ1 PA83 SEARLE GG 258 Targretin 252 577 573 ZANTAC 300