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 GX CE3 50 92 OP 704 QP 146 R 15 M 134 0.75 2 56 L179 ALG 265 SZ 985 8 8 T 17 311 L152 CL91 SX 0145 GG 263 WATSON 348 SA 50 PFIZER 412 TEVA 2049 ZGNX 30 mg VH3 K 4 CK logo and 121 L143 WATSON 343 RX616 214 Metanx T2 200 93 833 HP 512 ML 61 ANZEMET RX 774 logo and 2779