Pill Identification by Imprints: HP 531 Home Pill Identification by Imprints: HP 531 1 result CALCIUM ACETATE 667 MG CAPSULE Side 1: HP 531 Color: Blue Side 2: HP 531 Shape: Oblong Other Popular Drug Imprint 468 logo and 144 S 20 MARGESIC EL G500 ML 42 logo and 831 EL510 TIGAN IP 193 A332 LL713 Estradiol 0.0375 mg/day WPI 1119 M 1840 G8 CT ABRS-123 013 150 logo and 3062 SZ 198 AAT 104 PA4 SA 50 L61 448 Z 5 CC WATSON B384 LANOXIN Y3B GPI A5 M B4 NORCO 729 MX33 ML 23 A3 or F1 L238