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 SEROQUEL RTG 50 L852 PAR 868 44 532 316 or 317 RF 28 n 352 UPSHER-SMITH 0102 RX 830 664 cardizem CD 180 mg 204 M2A4 57344 EXH 8 G441 SL 25 5 9 AZ 80 M3 WC 402 832 2 1/2 A10 S903 N T4 I 136 EP 905 Z12 Lifestar and logo 2355 4740 50 223 54 656 IL 3583 G 3742 LBH 10 mg W 786 CL 57 AR TL 216