Pill Identification by Imprints: CM4 Home Pill Identification by Imprints: CM4 1 result INVOKAMET XR 150-1,000 MG TAB Side 1: CM4 Color: Reddish-Brown Side 2: Shape: Oblong Other Popular Drug Imprint 23 25 E4 M A12 Pfizer 44 397 L873 N L ACTICAL C51 ML 42 656 172 247 G147 1507 AS+ SC SZ 390 GG 450 E 0933 Pharmics A/P 12.5 / 45 FL 145 B528 T 100 U46 F52 logo logo and 804 PH 044 POT 20 FP M 47 A 37 100 ER M161 G 220 P L par 701 93 293 WPI 1000