Pill Identification by Imprints: S406 Home Pill Identification by Imprints: S406 1 result POTASSIUM CITRATE ER 5 MEQ TAB Side 1: S406 Color: Pale Yellow Side 2: Shape: Round Other Popular Drug Imprint 06/012D RIS 104 1078 BNVA M 1 K 56 LU E01 D 87 D C51 A-011 30 L 3974 L 232 D1 ML 43 446 ZYLOPRIM 300 1009 PC16 902 logo 631 SEARLE 1001 A08 LTG 2 VASOTEC 360 CC NoDoz PD 156 P-D 916 or 624 XANAX 1.0 ROBAXIN 500 b 213 54 795 I 24 1070 5/500 TR25 AN 735 44-338