Pill Identification by Imprints: HP 4 Home Pill Identification by Imprints: HP 4 3 results HYDRALAZINE 100 MG TABLET Side 1: HP 4 Color: Pink Side 2: Shape: Round HYDRALAZINE 100 MG TABLET Side 1: HP 4 Color: Pink Side 2: Shape: Round HYDRALAZINE 100 MG TABLET Side 1: HP 4 Color: Pink Side 2: Shape: Round Other Popular Drug Imprint E 144 M77 BP 301 barr 24 mg L U MP 273 Macrobid SANDOZ 573 1G5 MICROZIDE LH2 TL 125 EM1 X10 ADG WW 951 D3 C010 AN 442 TL 706 ZGNX 30 mg W 112 LITHOBID 300 WPI 845 I 03 logo 325 NV4 B105 152 P 3 PRIMA GG 341 RENAGEL 800 R P 32 S 127 C 114 CL92 AMA RYL logo and 667