Pill Identification by Imprints: 531 Home Pill Identification by Imprints: 531 4 results METHYLPHENIDATE 5 MG TABLET Side 1: MD Color: Yellow Side 2: 531 Shape: Round TRAMADOL ER 100 MG TABLET Side 1: 531 Color: White Side 2: Shape: Round TRAMADOL ER 100 MG TABLET Side 1: 531 Color: White Side 2: Shape: Round TRAMADOL HCL ER 100 MG TABLET Side 1: 531 Color: White Side 2: Shape: Round Other Popular Drug Imprint T580 W 923 Takeda 54 349 30mg V10 T 194 701 668 ZE68 CP 331 C27 T29 B 4 E 70 PERCOCET 5 I 53 RX694 I26 MX31 T 57 C 285 NM1 A534 alg WATSON 862 M D27 M 75 FR32 W AP040 MMD MP 71 Prenate SI T1 100 MYLAN 2150 J62 C223 A-011 30