Pill Identification by Imprints: A538 Home Pill Identification by Imprints: A538 2 results GUANFACINE HCL ER 4 MG TABLET Side 1: A538 Color: Blue Side 2: 4 mg Shape: Oblong GUANFACINE HCL ER 4 MG TABLET Side 1: A538 Color: Blue Side 2: 4 mg Shape: Oblong Other Popular Drug Imprint MMD 2 0 9 0 VM RX694 213 SD 9 ALKA SELTZER VANQUISH M 37 10 ML 5 T1 or T2 or T3 or P R6 GE 320 54 883 HP 60 RDY610 M 522 AN248 GG 931 L143 M 113 GG 235 080 CL28 MYLAN 7025 OV 111 100 or 300 MIDOL PM logo FLI 28 mg MACRODANTIN 25 mg SZ 210 2984 logo and 2892 W Effexor XR CG VP 022 C224 AK 60