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 P 80 W W n 356 P10 AMA RYL 31 MYLAN 257 I 2 37 45 LAN 1109 M 253 U48 CL55 54 519 0027 V M 544 463 E 47 ORN 57 GG 227 10 mg and 3513 logo and 59 logo and 342 MP 9 T546 ella G 4 Nitro-Dur 0.2 mg/hr A66 7767 L152 ML 60 B 4 1 mg L142 PE820 EM 10 C 15 WATSON 3203 WPI 1000