Pill Identification by Imprints: M 4 Home Pill Identification by Imprints: M 4 4 results METOPROLOL SUCC ER 200 MG TAB Side 1: M 4 Color: White Side 2: Shape: Oval METOPROLOL SUCC ER 200 MG TAB Side 1: M 4 Color: White Side 2: Shape: Oval METOPROLOL SUCC ER 200 MG TAB Side 1: M 4 Color: White Side 2: Shape: Oval METOPROLOL SUCC ER 200 MG TAB Side 1: M 4 Color: White Side 2: Shape: Oval Other Popular Drug Imprint FENTANYL 1200 West-ward 202 GG 518 ZOVIRAX 800 BL 325 203 R1 B 576 N 10 GP 151 SP 10 680 TCL 355 BP 301 logo and 805 LCI 1340 AZ 80 logo and 111 0 8 l81 GG 438 WW 112 SZ 431 420 NPR LE 250 cpc43 P P ROBAXIN 750 B 2 SG 326 I 2 M73 WPI 3629 IP 465 ML 34 V270 K 400 ENL IP 304