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 M RE6 P95 51 44 104 VIP 107 VP 011 10 mg and 3513 K2 EXELON 6 mg B75 P113 44-226 517 E 277 Surfak L409 B911 62.5 AN 641 GG 65 COUMADIN 3 IP 304 GG 338 I 07 M72 C77 logo and 5306 VP049 FENTANYL 1200 D6 K 66 MP 513 925 3 I84 logo and Pamelor 25 mg 91 L490 551 RTG-400 FL 28/10