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 NAPROSYN 250 T81 Black B 749 G&W L 128 AK 80 MP 4 GMZ 1137 30/2 F 24 I31 NM1 APTALIS 3 VH1 LL 722 A/P 25 / 30 AN058 PLIVA 324 BL logo and NK GDC 122 Y03 H108 TCL 003 6I F 85 MP 573 SZ 395 IP 10 RI2 N10 ALKA SELTZER BL 07 E0 PARAFON FORTE DSC A536 TV 1003 CP 150 AN 1