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 V 1 A221 FLI 21 mg logo and 19 GS UY2 425 Prestium ZOVIRAX 200 E 25 logo and YD S406 320 54 753 VASO 20 E658 S551 OP 706 RC17 NL 680 MYLAN 3404 KU 487 1020 b 213 TL 216 A 41 N 350 H 146 V358 M 923 MYLAN 2268 PLIVA-648 W 926 54 717 E 144 ZA-44 F 84 RX616 8.6 Metanx 353 BARRIER 1190