Pill Identification by Imprints: M 543 Home Pill Identification by Imprints: M 543 0 results Nothing Found!!! Other Popular Drug Imprint S251 G41 Fentanyl 50 mcg/hr MO1 T504 Butrans 20mcg/hour IP 465 2 or 4 E 404 Z 71 A33 853 H145 325 PBT 5.0 A026 EXELON 4.5 mg ZOLOFT 463 CH75 CL 20 NL 792 M P4 A 48 T 45 382 logo AB logo 9 A029 953 logo and 50 S 901 144 LILLY 4116 8 4 24 L429 60mg WATSON 487 C 91