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 250 MG T9 logo and 127 PBT 5.0 VIVUS 011 logo and 2839 GS LFG FE FORTE AX7 250 10 VALIUM 3170 V 54 650 WW 270 cor 256 7156 ZC 76 CYP 192 51A 7 98 MYLAN TM 100 UT 0.25 L16 490 M455 WATSON 796 B528 US 10 MX1 A222 5266 VANCO NL 276 F5 IMITREX N022 VP 021 M 125 CEP