Pill Identification by Imprints: PZ4 Home Pill Identification by Imprints: PZ4 1 result PERPHENAZINE 4 MG TABLET Side 1: M Color: White Side 2: PZ4 Shape: Round Other Popular Drug Imprint WATSON 528 OP 704 3671 MYLAN G1 AR BNP 7600 M 755 MYLAN DE 40 2175 MYLAN 1730 EV0204 M P3 M RN3 54 515 C6 ZD 13 UNISOM CTI 223 S 572 G 55 H 104 LL 252 ED 200 544 logo and 14 W Effexor XR NOVEN RX 553 V223 GG 227 FE1 SG 176 A25 D 24 M B1 ELP 20 CH75 logo and 103 AN 543 N 2