Pill Identification by Imprints: U46 Home Pill Identification by Imprints: U46 1 result HYDROMORPHONE 8 MG TABLET Side 1: U46 Color: White Side 2: Shape: Round Other Popular Drug Imprint N-P TL 218 66 Y nitroglycerin 0.4mg/hr L 60 I4 54 215 K 55 K 56 RD27 CARDIZEM M 155 AA 79 421 D99 FL 1.5 or FL 3 ADG NL 572 294 ER 2 N16 C73 M 83 MESTINON 60 V 44-518 CPC 76 ESL400 MP 37 X 10 PRECOSE 50 MUTUAL 100 F 73 321 LBH 15 mg 30mg MYLAN 6897 239 or 291 RESTORIL 30 mg RESTORIL 30 mg 1182 V 23