Pill Identification by Imprints: R428 Home Pill Identification by Imprints: R428 2 results LAMOTRIGINE ER 300 MG TABLET Side 1: R428 Color: Gray Side 2: Shape: Oblong LAMOTRIGINE ER 300 MG TABLET Side 1: R428 Color: Gray Side 2: Shape: Oblong Other Popular Drug Imprint AN 545 M Z1 AK E 104 P 240 P-O logo and 120 R189 logo and 123 WW P 80 I4 MYLAN 810 TEMODAR GXL 10 U 11 SC17 314 P019 EGLT 60 P51 W 921 10 XL logo and H9 AN 10 BAYER BAYER ZA-46 I 27 AC 132 Lilly 3228 A 04 US 15 446 K 6 OR 606 logo and PCE CHAO F04 NV4 RI 62 N 305