Pill Identification by Imprints: WPI 3631 Home Pill Identification by Imprints: WPI 3631 1 result HYDROMORPHONE HCL ER 32 MG TAB Side 1: WPI 3631 Color: White Side 2: Shape: Round Other Popular Drug Imprint logo and 2371 U37 180 West-ward 480 MYLAN 8015 E 757 b 424 299 REBETOL dp L417 b 971 NOVAST 214 or 215 WW928 21 or 18 S 429 G32 LLORENS N006 68 85 L 27 U 88 Northera logo and 4404 NT6 667 mg K10 MCR 314 AN 44 N 77 MF 3 G 022 TL 172 V249 93 7386 ML 041 PEPCID OMJ 150 G 3740 J 246