Pill Identification by Imprints: MgO Home Pill Identification by Imprints: MgO 1 result MAGNESIUM OXIDE 400 MG TABLET Side 1: MgO Color: White Side 2: Shape: Round Other Popular Drug Imprint 539 logo 040 166 V353 A 48 Z4 MP 10 OMP 20 W964 WAR 6 CB DROXIA 6335 5382 93 logo and 2907 Lilly 3228 F 1 S 6 ML 91 1386 T0101 K 4 STI 021 538 50 223 OTSUKA 90 mg or 30 mg CL50 056 FLI 7 mg NPR EC 500 54 602 8 06 37.5 25 PLETAL 50 H568 BETAPACE logo and 0.5 93 311 PLIVA 324 RX 12