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 227 508 OP 706 N022 54 987 VP302 RD 12 7/5 P F ML-P16 B105 PLETAL 50 CL 73 GG 338 NL 4 54 177 fentanyl 1600 mcg MYLAN 351 LU SD 9 DM2 OS 302 NPR EC 375 C 25 West-ward 202 01 M 615 MYLAN G1 UCB 579 P620 5 300 L237 T 189 705 F 73 TSL 0.4 EC P5 L126 VBZ 80