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 S593 60 ALEVE COLD&SINUS P019 MYLAN 199 MYLAN 1258 LOTENSIN M 473 1122 logo and 104 MP 47 TR100 C P WRF 6 ECR 204 IP 117 ZD 13 R719 MERICON logo RP 106 WATSON 3203 VASERETIC SZ 466 ACTICAL C 286 G 342 barr 302 WATSON 410 ITR M122 TV 2 1/2 299 MUTUAL 105 WATSON 343 SP/3 RX692 ZYBAN 150 L544 GG 85