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 M 543 1008 AN 512 G 0522 SZ 249 B-635 M 106 MP 443 I 16 H22 3 1 barr 140 mg AN 54 ANI 173 MINOXIDIL 10 232 or 294 or 233 PC23 M P5 L403 l81 58 75 N S1 b 97 2011 GAL 24 UPSHER-SMITH 0226 TN 4 E 103 AN70 West-ward 261 355 AAT 101 NP logo and 97 logo and 004 CPC1327 SEARLE 2762 I1 3613 IL 200 or 400