Pill Identification by Imprints: GH 4 Home Pill Identification by Imprints: GH 4 1 result GUANFACINE HCL ER 4 MG TABLET Side 1: M Color: Green Side 2: GH 4 Shape: Round Other Popular Drug Imprint AN 641 475 AZ 010 M 127 370 Z 300 336 AN70 logo and 750-20 E 707 Tiazac 420 L123 L852 30/2 12 25 E 749 2176 312 AUM 102 V210 GG855 C I A5 175 LAN 1301 E 47 GG 51 USL 10 EL510 EP 321 P 5 PROVIGIL BP 706 BL 300 BCM 50 C28 497 BI M202 T598