Pill Identification by Imprints: S407 Home Pill Identification by Imprints: S407 1 result POTASSIUM CITRATE ER 10 MEQ TB Side 1: S407 Color: Pale Yellow Side 2: Shape: Oblong Other Popular Drug Imprint GPI S2 852 894 TMC par 455 B 35 ICN G 3741 logo and 6451 EP112 ECR 54 231 APO TI-4 G80 M R EP 117 L146 M151 Lopid 1207 K75 RH37 GSI 54 661 VANDA 20 MG G44 ZC17 LAMICTAL XR 250 MUTUAL 868 OGT 918 Andrx 710 MEDROL 2 ZC46 LAMISIL Tylenol 500 Lofibra 200 mg WW 110 E502 WPI 3 E1 or D8