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 WW 455 M162 TCL 016 WATSON 411 A510 44- 107 NP 5 GG 134 3171 V Dia B 637 LBH 20 mg BERTEK 750 NP 20 barr 250 mg Theo-24 100 mg 61 61 5382 350 Eisai West-ward 5513 ML 4 MYLAN 551 3137 TAK ALG-25 SG 327 WW 125 WW 64 044 L5 MUTUAL 100 b 95 C020 par R 1 I 11 KU 262 K7 RD02