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 ELP 2 1/2 logo and 510 logo and 672 54 092 WW 125 logo and 2371 T127 logo and 344 GG 957 Integra-F IP 145 GG 166 93 2264 E 53 M 132 N 739 Q22 GG 108 ZGNX 20 mg M 27 DIAMOX 754 L009 1 85 54 557 A 31 logo and AB RI89 MYLAN 6320 036 9 5 M PD9 Dulcolax W 787 MP 50 MX31 G73 A297 375/20 132 AN 514