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 S12 BY4 LL 252 logo and 52 742 NORPACE CR 100 mg L 179 54 883 1204 SAL 54 036 AUM 103 C 16 M T11 RX126 O23 PA140 S553 GS TEW 50 mg NORPACE CR 150 mg S44 AA 12 176 99 WATSON 3208 logo and 038 M 71 KU 486 M 1860 L413 1423 Z310 10 mg G 0511 44 679 BVF par 455 logo and 22 MYLAN 6900 N-P 58 75