Pill Identification by Imprints: A536 Home Pill Identification by Imprints: A536 2 results GUANFACINE HCL ER 3 MG TABLET Side 1: A536 Color: Blue Side 2: 3 mg Shape: Round GUANFACINE HCL ER 3 MG TABLET Side 1: A536 Color: Blue Side 2: 3 mg Shape: Round Other Popular Drug Imprint E 173 IP 54 ACIPHEX 20 558 MPC 600 BP 630 MX 23 AV1 or AV2 B 304 54 193 3S0 30/4 E20 GLUCOTROL XL 5 ZA-11 CNG1 5/1000 CAP 537 ALAVEN ZGNX 20 mg T 16 SU PE EP 117 138 N3 INDERAL LA 160 I10 GG 124 RC26 C 14 SD 9 I-2 RE 21 M162 L19 M 613 SANDOZ 619 54 775 XR 200