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 2103 V Onset M0100 I20 GMZ CL92 SD 12 MYLAN GT 16 W 716 L 230 ZD 21 54 710 M MN2 MYLAN 772 293 AP207 RAPAMUNE 0.5 mg N 204 54 722 44 585 L149 ML 91 HP532 logo and 077 YB W1 2532 AL3 IP 54 L41 531 93 3147 ALTACE 10 mg MUTUAL 866 SZ 201 B or 0832 C 74 DCI M150 ALKA SELTZER and logo E 615