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 EXH 8 nitroglycerin 0.2 mg/hr GG 962 802 1047 M 060 SZ441 GP Tiazac 240 177 861 logo and 21 M D36 44 111 N10 MYLAN 2100 203 TE VA A25 BP 650 GAB 800 TMC435 150 I90 LCI logo and 25 mg 61 60 H150 K105 VIP 105 E 213 MYLAN 156 TUMS SD SR 375 813 2 1 GG N4 N 200 logo and 672 COUMADIN 4 BP 301