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 R207 L489 M 125 V 50 GGD7 25 TE VA TAK ALG-25 CL 76 CL 73 K 27 CEP BRX 4 L191 M 615 MP 183 K 40 4890 MX31 ML 87 381 100 PFD ESL600 A510 AN 475 WATSON 152 DAN HP 63 350 KRC H7.5 325 M1 MRK 52 253 or 306 T32 7663 20 MG E 210 O E