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 M RN2 SZ 210 H 146 WW 458 logo and 182 A66 AA 76 RG 10 I61 L 120 M MT 568 100 mg G 253 ML 62 1328 44 MYNEPHRON M 1743 PFD 267 mg M133 PRAVACHOL 20 NP A30 RX 554 ML MF 3 MYLAN QS 324 212 or 279 AZ 80 C25 KC 8 T580 L191 LBH 20 mg C3 42 16 V CL 56 Z 3925 M 313 T538